The Bare ATR light is a decent suit. But I would spend the extra $200 and get the ATR HD. It is a thicker trilam suit that can really take a beating. If you are diving in areas where there are sharp objects, you could easily tear a hole in the ATR light.
The Whites Nexus shell suit is comparable to the ATR light, but without the torso recoil. It's a decent suit too.
Have you looked at Diving Concepts? Their Z Flex suit is about the same price as the ATR light, but made with thicker material. It also has the torso recoil. This is the one I went with. It is my first dry suit as well.
I have read many posts on this board where people bought the ATR light and later got the ATR HD or a DC suit. Try to at least try on the suits you are considering buying. Do plenty of research before you buy, it is a big investment.
Once you go dry, you'll never go wet!!!!