Is it my imagination but didn't you used to have EBS gear Tony? Why not go back to a Proline 410 or a Neo 410?
I've just returned to a single EBS Proline 410 after a couple of years away and to be honest, I couldn't be happier at the moment. I know it's as heavy as a heavy thing with an elephant sitting on top but maaaannnn, it's fantastic having that presence and volume again. A set of detatchable castors on the bottom has all but sorted the weight concerns I had.
Alternatively, I'd +1 on the Ampeg 410HLF. Had one of these and it was a fantastic single solution, a real massive sound and looked the part. Big and heavy but the grab handle and tilt back castors made it easy to move around.
Tony