I know you're States-side, but take a look at the Barefaced range, particularly the Super 12 and the Big Twin models, I have the Big Twin T, weighs 35Kg and is plenty loud enough for medium gigs. 2x12 and 1x6 with an HF horn.
http://www.barefacedbass.com
Well I am not States-side
I live in Europe, Greece actually.
So it is difficult for me to either contact Lowdownsound.com mentioned earlier or have to some cabs that can be obtained only in the US.
The thing is I rely mostly is my intuition and to your comments cause the cabs i wanna have are not available in any stores here. As for the 35 kgs, i think that's a lot for a weekend cab. My max weight should be around 22kgs max.That's why i am mostly inclined to the Tc Electronics Rs212 or a MarK Bass cab.Those i can afford and i can obtain (online order) but unfortunately i cannot try them before buy them. I wish my cab (4x10 Ebs Classic) had a 2x12 version. I would knew exactly the sound i would get out of my rig