I recommend that you read a variety of dive magazines that review equipment to get an idea of what might fit you best, depending on the type of diving you plan to do. Not all regulators, BCD’s or computers will fit all situations. I have a Sherwood Avid for a BCD which works great in warm water because it can carry up to 20 lbs in the weght pockets. In cold water I need more than that with a dry suit or a seven mil wet suit so I have to wear a weight belt in addition to the weight pockets. Fortunately I don’t do a lot of cold water diving. My computer is an Aeris A1, air integrated. I really like it, it is easy to operate, and easy to read underwater without reading glasses. The only drawback I have found is that it has a tendency to signal the rapid ascent alarm whenever I just take a deep breath. As for regulators be sure that you know what you are buying i.e. will it handle cold water, will it handle nitrox, is it adjustable etc. I use a Zeagle DS-V which will handle any situation I plan to dive in.