I've got the T-Verb head and it sounds incredible. The Tremolo is not anywhere near as good as my Pro Reverb's though. I can get some really nice Cleans out of it with a Strat, but don't fool yourself into thinking that it will do Fender Clean.
The Blues mode is great, but much louder than all of the other modes, so I don't use it much.
The rest is pure Recto, but it seems to have more upper mids than my Roadster.
The only thing that I don't like is the lack of a Solo button.
As for the weight, the cabinet for the 1x12 Rectoverb is probably just as big as the one for the Tremoverb. The only things you would be looking at that would add more weight would be the extra speaker (maybe 10 pounds at the most), and the larger transformers (maybe 6 to 8 pounds).
All of the T-Verb Combos that I've seen had Vintage 30's. The Rectoverb that I had, had a Black Shadow Celestion, which is heavier than my Vintage 30's that I have in other amps.
I put a Mojotone BV-30 in my Rectoverb and it made a few pounds difference. Enough to notice anyway.
My Heartbreaker combo, which has less plywood than the Tremoverb or Rectoverb weighed 85 pounds in the box. Without the box, it probably weighs in at around 75-79 pounds. Really heavy, but worth it for the tone.
Just my 2% of a dollar.