I think I am going to get the Megatech Ocean Explorer 1. I want to get into submarines and I think this is the best way to start out. There is some subs on e-Bay....they look the same as the Megatech, with the side saying Ocean Explorer and everything. They are new and they are such good deals! You guys should check them out. Megatech says they can go to 6 feet but a magazine review said it can go up to 10 feet safely..what do I believe? These are really interesting subs, they even have a ballast tank that automatically blows out the water in the event of a interference. It is so small, and it has a ballast tank..it's really fascinating.This is my first sub, and I just wanted to check the opinion of everyone on RCU. Thanks!