If your budget can handle it, the Ocean Rodeo Surf Dry system is a real nice suit.
No baggy feel to it, very easy to swim in (designed for surfing) and if you go with the cold fire undergarment you will have the same mobility as a 2 mil wetsuit and have a lot less chance of overheating. That was one of the big differences that I noticed, regular poly or fleece just got too hot for me when I was working hard, and didn't have the kind of fit you experience with a multi-paneled rear zip garment. (multi-panels are the norm in bicycle garments, and make a huge difference)
cold fire booties and gloves.
the inner bodyglide coating is a step up in warmth, no stink either.
the gloves are the 1st pair I've ever used to have survived a winter season for me
with no holes or rips.
Surf Dry bag
It all fits nicely, and keeps the zipper from getting damaged from kinking.
cold fire undergarments, they work great with any drysuit out there