I ordered two innext snes pads for $8 total and they just arrived. They feel "ok" for the price. The d-pad itself is acceptable but still has the same problems as 8bitdo but to a lesser degree. The 4 front buttons are a bit taller and can be flimsy. Select/Start rubber feels very cheap. L button feels mushy. Overall, they're usable.
I went ahead and replaced the shell,buttons, and rubber pads with real sfc pad parts I wasn't using. I had to solder the original L/R pcb's because the innext one don't fit. It's just two wires per button so it wasn't a big deal. The innext ones can be glued on but I don't know how long they'll stay in place.
Feels very good now with the original parts. Used original SFC pads can be bought for ~$10-12US on ebay. Original SNES pads are more expensive due to this retrocraze at the moment.