...I ended up going for something entirely different. The Schertler PUB 280 powered cab. I was able to get a good second hand deal on a Dyn-B pickup and preamp, so I thought I'd go for that and couple it with the Schertler cab. I also bought an AMT SP25 (again, second hand), but I envisage that being used mainly for sound guys who want may want an alternative source to put through the PA. Might also try the AMT SP25 directly into the PUB 280, though I won't have any EQ, so it might be slightly problematic.