I´ve tried different things for bedroom volume practicing so far:
Boss VF-1 guitar multi fx w/ COSM amp modeling (9,5 " rack mount)
Behringer V-Amp 2 into stereo
Tech21 Trademark 10
The Boss VF-1 and Behringer V-Amp can´t be beat in terms of versatility and ease of recording - I still have both and they sound ok plugged right into my USB recording interface.
The VF-1 wins hands down in terms of FX quality. It might not be up to a T.C. Electronic G-Force, but certainly much better than the built in FX in the V-Amp. You also have more control regarding FX parameters and can change the order of all effects.
The COSM amp models are on par with the V-Amp... BUT you cannot change cabinets on the Boss unit, and only set gain to low-medium-high... a major letdown IMO.
For the quality of the amp-modeling alone, I would choose the V-Amp between the two. Taking FX into account, I´d say its a draw. But then, the V-Amp is much cheaper...
Then... the Microcube.
I thought it would be funny to have a battery-powered amp that can do it all... but, both being COSM amp modelers, the Cube seemed like a very stripped-down version of the VF1, with a harsh sounding speaker added. Nice toy to bring along for a BBQ, but nothing compared to the...
Well, I got mine used. At first I did not like it so much because it did not have enough sustain for fluid metal lead guitar... this gets much better if you crank it, but you can´t imagine how loud this 10W-thing can be!
Also, the one I got made rattling noises, that´s why I sold it again.
For anything from Roland JC-120 cleans to classic marshall crunch and Rectifier-like chugga-chugga rhythm, the Trademark delivered by far the best tones out of these practice solutions... and I guess that with a delay in the serial FX loop and a TS or something else for a lead boost in front, this would be everything you need. I think I might get another one, but without the rattle!
So, either Trademark 10 (+ pedals for some more versatility), or V-Amp if you´re on a budget!