I've heard good things about the Yamaha THR series of amps. The small amps I am interested in all have huge price tags... like the Fargen Mini-Plex, alas. I will keep buying the occasional lottery ticket.
I am a fan of ALL amps. One of my favorites is the Crate Powerblock. It was a Class D 150w bridged or 75x2 stereo amp. Plexi voicing, no reverb and sounds killer through a Emi Texas Heat speaker.
I also have 4 Champs. I head, two SF, one Tweed. The two smallest amps I have are a Marlboro Lil Smokey and an original Scholz Rockman. That reminds me... I need to make sure there isn't a battery in that Smokey...
J