I like the idea of having just one 4 ohm cab - maybe a 4x10 or 2x12 - and having one less thing to carry and transport while still getting max power from the amp. But, would there be any really big sound advantages to going with 2 cabs? I can get a very nice 8 ohm 4x10 cheap, but I'm hesitating because I'm not sure a single 8 ohm would be enough and not sure I want to carry a second cab. Any thoughts?