I got a new Ampeg 410he a couple months ago and it's terrific.
I'm also in the market for a 4X10, and though I love Markbass heads, I'm not married to the cabs.
Anything like the 410he but 1) lighter (like OP, weight is an issue), and 2) 4 ohms?
Also, front or shelf ported would suit me best.