Wookie,
For me, the thing with MarkBass is incredible power and tone out of lightweight products. Interesting comment from a guy who plays a 13-1/2 lb bass with no complaints.
But I did get tired of lugging my 80 lb rack, 85 lb SWR Triad (sometimes x 2) and 45 lb Goliath Jr (sometimes x 2) to every venue. Sometimes up and down stairs.
Now when I go to gigs, I can strap a bass or two on my back, carry my 102P combo in one hand and my extension cab in the other hand and call it a day.
And still pump out up to 500W of low end.