MerlinDV,
I have bought things from Performance and have been happy with their goods and policies. But, I have never bought a wet suit from them.
If you are not too far from a dive shop, I recommend that you start there--for one reason: fit. Different brands have different sizes and shapes. Also, knowledgealbe sales people should be able to help you with fit. Some people will not be able to use off-the-rack suits. For example, Barbara has longer arms and legs than some brands provide for--so she has to have extensions sewn on--i.e., a custom suit for those brands.
Joewr