Now that you have a better handle on the function of a wetsuit and what to expect in wearing one, let's flesh out the finer points of which specific suit will be optimal for you.
Quality is key! Pro tip: Turn the wetsuit inside out so that you can see the paneling and design. Generally, with a higher number of panels, the maker is able to engineer a suit that moves specifically with the mechanics of freestyle in mind, maximizing freedom at the catch phase, yielding greater power. Similar to having a dress suit tailored, a wetsuit with many specific panels in the design will allow for greater range of motion and swim-specificity.
Suits can range from $100 to $1000—a hefty spread—but you truly do get what you pay for. It's rare for a triathlete to do one race and hang up their wetsuit for good. With this said, steer away from the bargain $100 wetsuit that will only leaving you wanting more. In a few months, you'll be buying a better wetsuit to replace your frugal purchase. Each wetsuit maker typically has entry level, mid-level and high-level options. For most age-groupers, a mid-level suit will provide long-term quality at a reasonable price point. The high-end suits certainly can offer a bit more in terms of performance, but the subtle upgrade is merely personal preference at this point. The bottom line? Invest in a tried and true suit that will hold up and provide the support you need for your swims.