I am honestly so fed up with my current setup right now. I switched over to the S5II recently because everyone said the phase detect was finally a game changer for Panasonic but my Sigma MC-21 is just... it is driving me insane. I was doing a shoot in downtown Chicago yesterday, just a quick engagement session, and my 70-200mm EF lens kept hunting back and forth for like five seconds every time the couple moved even an inch. It is so embarrassing when you have to tell clients to hold still because your gear cant keep up. I love the colors on this sensor but if I cant get snappy autofocus with my Canon glass then whats the point? I have a wedding coming up in three weeks and I really dont want to spend thousands replacing all my lenses right now but I need something that actually works. My budget is probably around $300 for a better adapter if one even exists that handles continuous AF better than what I got. Is the Fotodiox any better or should I just bite the bullet on something else? Which L-mount to EF adapters are actually providing the fastest autofocus performance because right now im about ready to sell the whole kit and go back to Canon...