One thing I don't like is the archaic interface for the foot pedals. Have to tighten and loosen every time you set up and break down.
The FS6 is extremely useful though. You can assign almost anything to it. I used VH on/off, Fill/break, Sustain, and various others. As I have lost most feeling below my knees because of neuropathy, I am now trying to limit myself to two or max three foot switches, so I don't have to look to see my feet.