BC- get what a) fits, b) whats comfortable c) whatever is going to grow with your diving. Beth pointed out several differences between the zeagels and back plate systems (diverite transpack) and she`s right. One could argue back and forth on several points, but it all comes down to this. What do YOU want? Most back inflate systems have the ability to grow with the diver through physical changes or changes in diving style. If you hang out at the shops long enough youll find someone who will let you try their gear. get in the water with it and see if its what you want. REGS- Ive seen all manner of mixes and matches for every conceived reason someone can muster up. Dont go cheap, and try not to go used. If you do go with used, ask if you can do a check out with them before you buy, and go straight to the dive shop to see if they are in good shape. The only real warning I have is about the trap I fell into. And thats the cool super cool looking universal directional octo. Dont go for the ultra weird stuff. if you want a good octo, just buy two of the same primary regs. a reg is a reg. if its good enough to breath off of most of the time, use it for a back up too. above all dont fall into the impulse buys and sales. my first BC was a crappy jacket that was supposed to be a lot of bang for the buck. I hated it. I could of saved those hundreds for 6 months and bought my back plate system and been all the happier. shop smart. for the record, I bought the Diverite because I got to wear one first. I couldnt find anyone to show me the zeagle ranger. It was #1 on my list but got bumped in light of the test. I have tried a black diamond though. aside from my diverite, its the most comfy BC i have ever worn.