The battery rattles a little and the vinyl stickers peeled up, but other than that, it seems like a rock. I've never needed customer support. He responded right away to my letter so i suspect their customer support is good. I realize this not an inexpensive pedal and there are a lot of great sounding tubescreamer clones out there. The second channel and the bass trim pot and build quality make it irreplacable for me.
All controls have an even, subtle sweep throughout their range.
I have used this with a huge assortment of guitars and amps. The TP2 works equally well with either single coils or humbuckers. Most of the amps I use are Fender combos and that's where this pedal really shines. It morphs well in that you can get outstanding tone with everything from a 335 to a strat as long as you take the time to play with the controls. The tone control is subtle but demands your attention.