Been looking at the Hertz Amps however the HP range, it looks like are discontinued, I had been considering the HDP4 amp.
But I must say I've just stumbled across a corker of an amp from rainbow.... the iPaul range... must say they do have a fair bit of eye candy about them and have read some good reviews about them (however.... must do more reading).
EDIT: have the iPaul amps really been around this long??? Well I suppose the saying stands.... If it ain't broke... Don't fix it!!
Saw this review, there dont seem to be that many any more.