Small combo - def the B100R. Head? Lots of them, but in the bang-for-the-buck dept, my favorite is the Crate BT-350. Built by SLM on the same line as the Ampeg stuff and allegedly using many of the same parts, it was the only "pro" bass amp to ever wear the Crate badge. Through a fridge, very SVT-like.
Ampeg Club #347, Thunderbird Club #69, SX Club Member in Good Standing, NJ Bassists #34