I've have owned as many as four and I still have my first one that I bought back when ScubaPro was selling them. There have been some changes for the better over the years. The one I like the best is zip seals. DUI is the manufacturer that I have dealt with. If you are on a dive and are putting on you suit and you tear a neck or wrist seal. You can change the seals yourself. You just can't beat this. When you order your suit have a pee valve installed and a pocket on your leg. If you are an instructor you'll want knee pads added. Because you'll spend a lot of time kneeling. The outside material will depend on where your diving. Hope this helps. Stay safe and have fun.