I've gone through quite a few of the X-Deep...
I really like them on paper, but when it comes to me actually using them, I am not a fan..
Classic ... Sooo much bungee to keep the bladder where it "should" be, but alas, it always ends up way down past my waist.
Tec ... bladder is integrated, yay, but still requires bungees.... and I find it very awkward to reach over the bladder to dump
Spine weight pouch.... I don't use much weight, so it was a great spot to put my canister light (5aH battery)... but for my longer dives, I didn't like having lead right along my spine.
I have a version of the Nomad... there are no bells or whistles (quick releases, swivels, padding, etc)... just a single piece of webbing. I did change out most of the D-Rings as they were fixed welded rings that I didn't like.
The little bit of weight I require (even in cold water in drysuit in salt water) the 3-4lbs fit on the webbing easily between the back/bladder and the hip attachment.
I fit my AL6 inflation bottle into the elastic webbing on the bottom of the bladder, everything else is rigged up as one would with doubles (canisters.. light and heat on the right hip).
I use this with LP85 and a side mount rebreather, with up to 3 additional AL40/80 deco bottles)
_R