Been thinking about this... since weve covered the standard Nikon and Godox gear, check the Nissin MG80 Pro Professional Flash for Nikon. Its quartz tube handles heat way better during fast HSS bursts.

Ive been shooting with Nikon bodies for over 15 years, and honestly, the D850 is probably the best DSLR they ever made. When it comes to flash, I totally get the hesitation about the price of the SB-5000. It is a great unit, but for the price of one Nikon flash, you can basically buy three or four Godox units and have a full multi-light setup. If you are worried about the budget, I would skip the Nikon-branded stuff for now and grab the Godox V1-N Round Head Flash for Nikon. I have two of them and they have survived hundreds of weddings and corporate gigs. The round head gives a slightly more natural light spread, but the real winner is the lithium-ion battery. It lasts forever compared to AAs and the recycle time is super fast. If you want to save even more cash, the Godox V860III-N TTL Li-ion Flash for Nikon is basically the same internal tech but with a standard square head, and it is usually significantly cheaper. Another pro tip if you really want that Nikon reliability without the 600 dollar hit: look for a used Nikon SB-910 AF Speedlight. It doesnt have the built-in radio like the newer ones, but the TTL is incredibly consistent and the build quality is better than almost any third-party option. You can usually find them in great shape for under 200 bucks. Personally, I would go with the Godox system though, because their wireless ecosystem is just way more affordable when you eventually want to add off-camera lights for those receptions.

I spent a ton of time testing recycle speeds on my D850. The Nikon SB-700 AF Speedlight is a total tank, but AA batteries really bottleneck you during bursts. I moved to the Godox V860III-N TTL Li-ion Flash because the 7.2V Li-ion battery is way more consistent for HSS and you dont have to swap cells mid-shoot. Technically, the Nikon SB-5000 AF Speedlight has better heat dissipation, but the Godox is better value.

Just caught this discussion. Before I dive into specific gear specs, how many shots are you typically firing in a quick burst? If you're doing rapid-fire sequences during a wedding ceremony or a keynote speaker walking the stage, heat management is basically the only metric that matters for reliability. I went through a phase where I was constantly worried about my gear failing during high-pressure corporate shoots. My current setup finally gave me that peace of mind. I remember one specific gala where I had to pop the flash every few seconds for hours. The thermal protection on the unit I got is super reliable; it slowed down the recycle time slightly to protect the tube but never actually shut off or locked up the D850. It has been very satisfying to just focus on the composition rather than wondering if the electronics are gonna fry. Knowing your expected duty cycle helps narrow down if you need a specialized head or just a standard speedlight.