[Bushman]

Fender Twin Reverb.
There, I said it.
85 cranking watts of pure tube bliss, ready for whatever you throw at it.
So far it's been:
(Dirt Pedals / Processor)
Digitech RP2000
TS9 Tubescreamer
V1 Jekyll and Hyde
Boss DS1
Seymour Duncan Twin Tube Classic
All have sounded great. Some better than others.

[jerrydyer]

that tweed blues deluxe takes pedals great if you defeat the master and use it old style... find em cheap too.

[RipVanWinkle]

My HRDlx just bit the dust, and I was fortunate enough to replace it with a Blackstar HT-20 combo. This amp is really slick, and responds really well to my pedals...much more than my hot rod deluxe


...but I found out (before the frying of said amp) that the capacitors were shot in it. It was sounding really bad, no matter what I was doing.

[gopats1479]

I was formerly looking at the Blackstar amps because of the ISF. Does it really change the tone from US to UK?

[RipVanWinkle]

I don't have enough experience with enough amps to peg the difference between in the settings, but it does add a whole dimension of tweakability to the amp

[Stratopastor]

The ISF makes a marked difference in voicing on the one watt version - see

Blackstar HT-1RH Tube Guitar Amplifier Is A One-Watt Wonder (Video) | Gearwire