If effects aren't vital, I'd highly recommend a Vox Pathfinder 15R. I know there are a couple of other users on this forum who love them as well. It doesn't have effects, but it does one thing well....sound great. It has a decent reverb and tremolo on it.
The Cube 15 is a great little practice amp as well.
The Cube 15 is a great little practice amp as well.