Dry suites are as unique as the individual using them. While there are many makes there are only a few different types. While I have been down in most all I currently own a shell suite similiar to the DUI TLS 350 or the Dive Rite 905 front zip.
The Dive Rite 905 front zip comes with a warm neck cover, suspenders, bellows pockets, and suspenders that others charge for as extras. I also like their boots vs the rock boots. It is the Dive Rite 905 that I currently have. With these shell suites they tend to dry much faster the the neo suites, with a variety of undergarments they can meet the needs of most any environment. their only drawback is that they are not flexable therefore size, proper fit, is critical.
Like any dive equipment we always suggest that you RENT before you spend your hard earned $. Try different types and if you are not already dry suit qualified find an instructor that has been down in multiple types and can speak to the pros and cons of each. All types are a bit different in and out of the water so dive them a couple times and evaluate the type of diving you intend to do, then the $ then look/rent again before you buy. Some shops will provide a discount of the rental cost if you purchase a new suit from them. Ask your LDS you may be suprised.
As a disclaimer I/we (Brunswick Scuba) are not a retail store we train safe divers, therefore we are not tied to any brand so please ask if you have other questions.
Hope this helps you discover more of the Creators awesome aquatic world.
Best Fishes!!! [