I currently own a Super Flightcase - 250w with 6 x 5" speakers. I used to own a Phil Jones 16B + 8T combination driven by a 2000w rack amp. I wanted the same sound in a MUCH more portable package.
I don't play gigs where I need that kind of power anymore. I mostly do small acoustic sessions where I'm playing with unamplified musicians and I'm turned way down, or I'm running through the PA and just using my amp for a stage monitor with the lowest stage volumes possible.
While the combo doesn't have the super low end of the big cabinets, it is certainly sufficient for my needs. And although I wouldn't call it light, I can carry all my equipment in one trip - bass in one hand, amp in the other.
For its intended purpose, I haven't found anything better.