Well, you don't have your location listed, and there are a lot of options within the three you listed. The drysuit you choose needs to work well in the diving environments you dive in. Here's what I can tell you:
- Crushed neoprene or neoprene tend to do pretty well in very cold water. However weight and dexterity will suffer when compared to a trilam suit.
- Crushed neo/ neoprene suits claim to have better abrasion resistance than trilam. You are going to spend less time patching a neo suit.
- A neo suit will likely have slightly less drag than a trilam suit, as there tend to be more folds of material in the latter.
That said:
- Trilam suits are light, very versatile, and can be dived in just about any water temperature with the right undergarments. I dive mine in anywhere from 40 to 75 degrees with no issues.
- Trilams are generally more comfortable and less restrictive
- Front zip trilams are easier to don and slightly more flexible (as most have a retracting torso). Whites is the exception here as they have the wierd zip pattern
If it were me, I would look at the dive rite front entry suit or the Whites Fusion or Catalyst 360. The fusion gets some good reviews, I'm just not sold on the durability of the shell for the diving that I do (wreck and cave). I don't have any experience with Andy's suits, but if he has a trilam I would check it out. Again, just my opinions. Lots of people feel strongly about drysuit choices. Hope this helps!