I am so new at this. I am shopping for my first set of gear. How do I know what to get or where to start? I don't want to spend a fortune, but don't want to wish I had gotten better equipment to start off with. I will not be diving in cold water (less than about 68 degrees) we will be traveling some with equipment. I want easy maintainance, but EASY breathing. What do I want to try first in a regulator? What brands seem the best? How is Scubapro or AquaLung in comparison? Thanks for any advice or tips you can offer. All the descriptions of 1st stage and 2nd stage sounds Greek to me. Pistons? Diaphragms? What is the difference or benefits? Ballanced or not? HELP please. Low pressure ports, high pressure ports? WHAT...?