I don't like the standard PCE pad that I have that much. I much prefer the snappiness of the Blaster Pad buttons and D-Pad. I think I got two different revisions of it, though. I had to open up and sand out the ring around the d-pad piece in order to free up the D-Pad. The other two aren't nearly as stiff out of the box.
The other two are also new old stock, but they have button continuity problems. Sometimes I have to press down really hard on the buttons in order for them to work. I thought it might have been the carbon pads on the underside of the silicone membrane under the 3 buttons, so I turned it around. I was still getting the same problem in the same button, though. The I button. I also think my other new controller has similar problems with the II button. I've given thought to fixing the circuit boards, but I think I'd rather keep the controllers strictly for spare silicone membranes. In 10 years, I'll have worn through one set of them. I've worn out NES, SNES, and Dreamcast controllers, and I'll probably wear through these, too.
Anyway, this gives me an excuse to track down 6-button pads now.