I have a lot of amps (all are tube amps), Fender, MB, Peavey, Carvin, Bugera, Bell & Howell, Epiphone, all great in their own way. But since I got my Bugera, the 1990 head through a 4x12 gets the most playing time. I originally got the amp, thinking that since it is a very inexpensive Chinese amp, I would end up gutting it and building my own circuit. But turns out, I was more than pleasantly surprised to learn that not only are Bugeras great sounding amps, they are also very well built. The 1990, on gain channel with gain cranked, is extremely quiet, barely a slight audible hiss, and wonderful sounds on gain and clean channels, and I prefer the Triode mode. So naturally, I got another, a T50, which is also awesome (Cathode bias mode rocks!). I use all of my amps, but keep coming back to the 1990 more often than any others, and the T50 is small and portable, for when I travel (not often).
I am looking at the PRS Tremonti 15 watt amp, seems promising. Debating preordering ....