Josh Hayes wrote:
Maybe I should just save a bit more and splurge...
This depends on how much you currently have available. I would expect a Vox ac15 to be an excellent choice for your needs. To a lesser extent the Ibanez tsa15 (which I myself own).
I haven't shopped around much for amps, but would expect them both to be available under the 4k mark second hand.
Otherwise, as has been mentioned, the Cub12.
As far as nice solid state amps, well the Roland cube is right up there. I would even be inclined to say that if a cube didn't meet the grade, most ss amps will also fall short (except maybe a Roland JC...which is gonna cost you tube amp money).
So to summarize, I would expect the Cube 40 to be an excellent choice, but if it doesn't rock your boat, try some of the 15watt tube combos around.