Another vote for the Kokatat Icon.
Mine is likely arriving this week. I did a lot of research and I think it's one of the best out there right now. My wife and I both bought this suit, and chose custom colors (and sizing for me) using their online gizmo. Check it out - it's fun playing with the colors: Kokatat | Custom - Products
This may be helpful too: Customize your drysuit | Canoe & Kayak Magazine
For me, the Icon had a few things going for it that I loved:
- Rear entry (zipper across the back/shoulders instead of chest/arms - more comfortable, and less chance of water intruding through skirt tunnel bump caused by zipper)
- Lots of CORDURA GORE-TEX (~ all of legs, and shoulders/arms)
- Kokatat Reputation (Warranty, made in USA, etc)
If you decide to pull the trigger I HIGHLY suggest contacting Bobby at CKS. If you tell him Kevin sent you, he may even get you the killer deal he got me and my wife.