Hi. I just got a pretty good offer for an 8ohm Ampeg 4x10 Cabinet (Classic 410HE). It's 500W (1000w RMS). A long time ago, I actually had the 410HLF (4ohm cab) and I was pretty pleased with it.
This cab, though, has an 8ohm impedence and my head is biampable with one output rated at 100W...