halocline
Contributor
My main hobby is reefkeeping which is what got me into diving.
Welcome to diving! Two things come to mind:
1. Believe it or not, diving is substantially cheaper than reefkeeping. It's a refreshing change to visit the animals in their home as opposed to hosting them in yours. I used to build skimmers and calcium reactors to feed my reef habit. It still cost a fortune.
2. Once you start diving, and visit some great tropical sites, your approach to reefkeeping might change! Mine did, I gave it up...hehe...but for sure you get a whole new appreciation for space and light.
My more thoughtful advice about buying a BC is to either 1) purchase something used and inexpensive to get through a season or two of diving, and get some buoyancy control. This will help you to better evaluate the differences between various BCs. or 2) Make sure you try a BP/W system before you buy anything. You want to try one with a rigid plate, minimal webbing harness, and small, streamlined wing.
Most scuba gear decisions have far less impact on your diving than the salesmen might make you think, but IMO the BC type really does make a big difference.