Any budget limitations?
In the mid to higher-priced combo amps I would take a very close look at the Gibson Goldtone GA30RV or GA60RV. First of all because of their outstanding tone, but also their incredible versatility. The 30 Watt version is all-tube Class A with 1x12 plus 1x10, and the 60 Watt is A/B with 2x12 Vintage 30's.
Just take a look at the glowing user reviews on Harmony Central. These amps are somewhat under the radar, unlike Fenders, Marshalls, Boogie, et all, but man, they rock!
Other than that, and at a somewhat higher price point, I would look at the Bogner combos, Diezel, or Dr. Z.
For a more affordable tube amp I tend to agree with Traynor recommended above.
I don't have any recommendations for solid-state or modeling amps, as I'm not knowledgeable about them, preferring all-tube myself.