I have two Ampeg 210 AV cabs that make a nice modular platform for a wide variety of situations. With my Aguilar TH500, I can stack a vertical 410 on stage in a 1 sq-ft footprint.
Those are still my favorite cabinets for gigging. They are small, pretty light weight, and have that classic ampeg sound that sits well in a mix. 1 of them will work for a small room, 2 of them sound even better, and you can vertically stack them in a corner.