The BARE SB System is higher end but totally worth it. I dive one myself, I only need 10lbs which is insane for a drysuit I know and that is why I love it. Def the way to go.
BARE SB System Link
Dry Suit Oceanic, Cressi, TUSA, Pelican, Underwater Kinetics, StahlSac, BARE, SeaLife, Sea & Sea...