Not familiar w/ Omega but they sure do make some nice looking stuff. I'd be interested in test-driving a 3x12 / 1x15. They have some big hitters like Emmure,, The Black Dahlia Murder, Devildriver & All That Remains using their stuff. Looks like Omega is to metal/hardcore what Emperor Cabs is to doom/stoner sludge.
Lots of my friends use and are endorsed by them. Really good cabs that can customized/configured almost any way you want them. If ya got the $$ go for it.
Just saw them used with the ghost inside....literally one of the nicests live tones I've heard in a long while. Very crisp and punchy. I'm seriously debating snagging one soon.