I use urxvt ATM, though I used to use st for a long long while. But I don't like how I have to apply patches and stuff just to get scrollback support (for example). The Suckless guys are great but sometimes a bit dumb about their features.

Also I was having trouble with bitmap fonts. For some reason spaces weren't respected in ncurses apps. So alsamixer would be all wonky looking. Other guys in Nixers also had trouble with that.