mobikemike,

I use a customized version of the Mountain Laurel Designs Burn. It's rated, I believe, to 18, maybe 20 lbs, but I used it once for 26 and had no trouble at all (just one day, but a fairly long one). This suggests the suspension is very good.

Ron (Bell) is very good about meeting customer needs, so if you give him the volume you need, I believe he can build a pack to carry it at a very reasonable weight. My slightly oversized Burn weighs just a whisker under a pound (I removed a couple of things, original weight was just over a pound).

best, jcp