Hi Rouse
I have only played through a HRM which I received nearly 2 weeks ago and I play low output Strats, so I only have 1 perspective on these amps so it's best to get the views of other more experienced users here as well as talk to Nik.
Having said that, you definatley wouldn't be disappointed with the HRM's cleans in fact they're awesome, definately a Fender Twin like sounds and really ballsy even at bedroom levels. The loudest I have had it so far is 3 on the master volume but at rehearsal levels it's just over 1 and our rehearsal room is huge, it's 200 sq metres.
The lead sound is very versatile, it can go from slight breakup to somewhere around Mesa gain territory and everywhere in between, but with it's own distinctive sound with a lot of really nice harmonic texture and it's matches the clean sound perfectly.
For the best description between the different models have a look at this earlier posting
http://ceriatoneforum.com/index.php?topic=1117.0I hope this is of help to you.
Cheers
Brian