Oh man, congrats on the M! Honestly, i feel u on being overwhelmed... it is a lot of money to carry around. I've been shooting M's for about fifteen years now, and in my experience, most of the stuff people buy is just for show. But there are three things that actually matter for the shooting experience. Basically, the thumb grip is a total game changer. I used to shoot without one cuz I wanted that minimal look, but my hand would literally cramp after an hour of street photography. I highly recommend the Leica Thumb Support for M11 or the Match Technical Thumbs Up EP-MX if you have an older model. It gives you that secure one-handed grip and makes the camera feel SO much more stable when you are tracking subjects. Regarding the battery, if you are on the M10 or earlier, you 100% need a spare Leica BP-SCL5 Lithium-Ion Battery. The M11 is better, but I still carry one just in case lol. For protection, skip the half-case. It kinda doubles the thickness and ruins the sleek lines. Just get a Leica Screen Protector for M11 and a solid strap like the Rock n Roll M Pro Camera Strap. I've used that strap for years and it's super comfy for all-day walks. TL;DR:

• Leica Thumb Support for M11 for ergonomics.
• Rock n Roll M Pro Camera Strap for comfort.
• Leica BP-SCL5 Lithium-Ion Battery because rangefinders are thirsty. Good luck with the new kit! Its gonna be a blast.

Hmm, I've had a different experience. While everyone loves the minimal look, I think safety-first is the ONLY way to go with such a huge investment!! I actually disagree with starting with thumb grips... you gotta prioritize security because one drop is a disaster!

• Peak Design Cuff Camera Wrist Strap for solid drop protection
• B+W 39mm UV Protection Filter (010) to save the actual lens glass
• Leica M11 Leather Protector for impact safety Safety over style every time, you know?

Saw this earlier but just now responding... honestly i think you should just get a generic soft release, a microfiber cloth, and maybe a small lens pouch. Dont feel like you need the official brand stuff because the prices are just insane compared to what im used to with my old Nikon. It actually reminds me of when I tried to get into road cycling. I bought this fancy carbon fiber frame because everyone said it was the best, but then I realized I was way too out of shape to even notice the difference. I spent more time at the coffee shops along the route than actually biking. One time I even got a flat tire right in front of a bakery and just decided to stay there for two hours eating croissants instead of fixing it. Anyway lol, sorry I totally went off on a tangent there.

Ok so, I totally get that wallet-is-screaming feeling!! I've been shooting with rangefinders for nearly 20 years now, and when I finally upgraded to my first digital M, I literally had zero dollars left for accessories after buying the body and a decent lens. I felt like I had to protect this precious thing, but I couldnt justify spending hundreds more on branded leather and bits of brass. I learned the hard way that you really dont need to pay the Leica tax for every little piece of gear to have an amazing experience. Here is what I recommend for a budget-conscious but functional setup: For the thumb grip, it is a total game-changer for one-handed shooting, especially if you have larger hands. But instead of the super expensive ones, I suggest the Haoge THB-M10B Thumb Up Rest for Leica M10. It usually costs around $45 and feels just as solid as the official version. It makes the camera feel SO much more secure when youre weaving through crowds. Regarding the battery, yeah, you definitely want a backup for a full day of street photography. I highkey recommend going third-party here. I have been using the Wasabi Power Battery for Leica BP-SCL5 for years. You can get a two-pack with a charger for about $55, which is insane compared to the $180 price tag on just one OEM battery. Honestly, they work perfectly and I have never had an issue with them. I would personally skip the half-case. They look cool, but they add bulk and make changing batteries a pain. To keep things minimal and protected, just grab a ULBTER 0.3mm 9H Hardness Tempered Glass Screen Protector for Leica M10 for like $12. So yeah, my first three buys would be:

• Haoge THB-M10B Thumb Up Rest ($45)
• Wasabi Power Battery 2-Pack and Charger for Leica BP-SCL5 ($55)
• SanDisk 128GB Extreme PRO SDXC UHS-I Card ($25) Basically, dont overthink the gear. The best accessory is just having enough power and storage to keep shooting all day long. You are gonna LOVE this camera! Cheers!

Curious about one thing: which M model did you actually end up getting?? Honestly, jumping in here because i went through a realy frustrating phase with my setup. I'm kinda new to the rangefinder world but i geek out on the technical specs and build quality. Unfortunately, the first half-case I got was a total letdown... it was advertised as premium but it trapped dust and basically acted like sandpaper against the finish. Not as good as expected at all!! I tried comparing a few approaches to the ergonomics:

• Leather cases: They look cool but add bulk and can trap grit.
• Metal grips: Better for technical handling but make the camera feel less classic.
• Naked: Best for the minimal feel but highkey stressful for the price. Before I can realy dive into the technical bits like battery cycles or grip ergonomics, i gotta know if you have the one with the removable bottom plate or the newer integrated one? It changes the whole logic for how you access the storage and power. I mean, the weight distribution is sooo different depending on the body. let me know! peace