i think thomann still sells the traynor ycv50b for around £450. Might be worth considering. Not as good as a bogner shiva, but not 4 times worse either (as the prices would suggest, though obviously diminishing returns apply with all expensive gear, not just bogner, and something which is 10% better for twice the price may still be worth it if that's what you need).
I've only tried the 40 watter, which seems to be almost exactly the same, aside from a different (worse) speaker, 6L6 power tubes and a slight circuit tweak to accomodate the 6L6es. It seemed pretty nice when i tried it.