Upgraded from 6500 to 6600. A bit expensive but worth it for what I like to do. I am a hybrid shooter. Have Tamron 17-70 2.8 and Sony 70-350. My flash is Nissin i60. Right now, I'm looking for a remote trigger and light stand & umbrella. Any suggestions? I see the Nissin Air Commander 1 or 10s. Both are expensive but are they worth it? I know the 10s can trigger more flash while Commander 1 only do 1.