In addition the lift capacity of the BC should be taken into consideration as well. If you're diving in a cold water environment frequently where you will be wearing a lot more weight because you have a thicker wetsuit or eventually a drysuit you need a BC that will provide adequate lift. For example when I dive in my drysuit, I use 26-30lbs of weight depending on my undergarments. My first BC only had a lift capacity of 32lbs so virtually all of my lift capacity was going to support all of the weight I needed to get down. My new BC has a lift capacity of 60lbs so now I know it can support my weight and a tank more efficiently. Another feature I find very useful on a BC is the number of D rings. I like to have plenty of D rings that way I have plenty of options to attach things to my BC such as lift bags, lines, flash lights etc. or when not using those pieces of gear, lots of D rings allow me to change where I have my octo and gauges clipped to, to allow easier access depending on exposure suit, as well as to change drag and trim. I don't want to recommend a specific brand or style of BC because it all depends on your preference. I however, use a jacket style right now but plan on changing to a BP/W. I hope this helps.