I use a Marshall JVM1H.
At full power it is 1 watt, the low power setting takes it down to .1 watt. It has an effects loop and 2 channels (foot switchable). I usually run it through either a Mesa 1x12 or a Johnson Millennium 4x12 (depending on how much racket I want to make).
Advantages - Tube tone, I can crank it up and still be in the room. The feel/response is very different than high power amps at low volume. If you want, you can just use the clean channel and treat it like a single channel amp, crank it up into classic rock territory without a boost. Lots of gain available. Speaker emulated/headphones/recording output, silent recording is an option.
Disadvantages - shared eq, higher cost than most other 1 watt solutions (these are made in England and were limited, usually around $500 used), none of the effects that modelers have. Not much headroom on the clean channel, if I want a big fat clean sound I tend to use my Mesa Mark III.
Overall I'm thrilled with this amp. I work 3rd shift so a lot of my practice time is late at night. I can crank amp on the low power setting without waking the family upstairs. I still have a Johnson Millennium 250 head and Mesa Mark III if I want to get loud, but most of the time I play the JVM1H.
