I am currently subbing in two bands which are closely related, and practicing with each. Lots of moving amps around. I just bought a Fender Rumble 100 V3 (earlier versions are different) and I gotta say it's a home run.
It's just 22 pounds, 15 pounds lighter than my Genz-benz Shuttle 6.2/12" cab. It's even a bit smaller than the G-B. More than enough for practice, and enough power for a small venue. It can REALLY get the traditional "dead flats" sound which I like. I'm still playing with the Vintage switch and other features, but so far I like everything I've tried. it may not be the best for those who like a very bright tone, as it seems a bit oriented to a bassier sound...but I haven't tried to do much with bright sounds.
At any ate, if you've been eyeballing these, they're definitely worth checking out for a small amp.
For those of you deepinahearta, Joe Bob says, "Check it out."