I did for years until I picked up my first Blaster 3-button pad. I'd still use the Ave 6 as my everyday pad if it had a 3-button mode instead of just 2 and 6.
How does the third button on that controller work? Does it simply remap start or select? I've always wanted a three button pad for Forgotten Worlds, and NSCX has some of the Blasters right now. I was a little sad when I got my Ave 6 and it didn't have a 3 button mode.
Some copies of
Forgotten Worlds were indeed packaged with NEC's three button pad. The switch remaps the "start" (or is it "select"?) button. Anyway, it was a nice big box. I have one somewhere (I moved four years ago and have yet to unpack everything). I'll take a pic if I find it.
A long time ago, at the magicengine forum, I was compiling a list of games that benefitted from the three-button pad. Unfortunately, the magicengine forums crashed and we lost ~2+ years worth of conversation (apparently, the most "recent" back-up of the forum was pretty old).
I'd love to create another "Games that benefit from a three-button pad" mini-FAQ. I think I'll start a thread.