Welcome to the board Drew.
Pasley has given you the best answer so far. Rent or borrow different types/makes for a while, get some diving under your belt and then decide what works best for you and your style of diving. I have dove jackets, BP/wings and back inflates. Each have their advantages and disadvantages. Don't be pushed into any style BC before diving them yourself. I prefer any kind of back inflates over jacket styles but I find BP/wings more of a pain to adjust that I care to mess with. To ME they are uncomfortable above water and perform no better than other back inflate styles underwater. That said, IF I were going to dive doubles or go into tech diving, then a BP is what I would use. Lots of people love BP's, some hate them and some like me are kind of neutral on them, so the only real way to know if you like or hate them is to actually dive one yourself.
For your wife, I would suggest that she also try different types. Reguardless of the BC's quality or how it performs, if she is not happy with it, you will not be happy..