Hey there,
I'd check out these threads:
http://www.scubaboard.com/t20612-.html
http://www.scubaboard.com/t12791-.html
I thought SeaJay's reviews were some of the more honest assessments of a bp/wing setup. He comes out in favor of using one for himself overall, but is very realistic about some of the drawbacks.
Everyone on this board will tell you to think ahead. Buy a Nitrox computer now even if you dive air. Buy a BP/wing so you can get into tech. While I'm sure that kind of thinking applies to the poster and is well-intentioned, I'm not sure it necessarily applies to those of us who really will probably never (or in the distant future) get into tech.
After reading threads like the ones above, I decided that the benefits of BP/wing weren't really for me, and that the drawbacks would annoy me. To use just one example, SeaJay sheds light on the ever-touted ease of adjustment. BP/wings aren't like BCs in that you can just tug a few straps and shift weight around to be more comfortable. It's a big production to adjust and you have to take it off.
I'm sure BP/wings are the epitome of dive perfection for a lot of people here, but I don't think they are for me. I just want to recreationally dive and have some fun. BCs are comfy, truly easy to adjust while on, packable, comfy out of water when you're hauling your rig down some cliff, have pockets and other niceties, etc.
I think you should assess what type of diver you really are now. Odds are if you do get into tech, you'll be buying a bunch of gear anyway. Try out a BP/wing and a back-inflate and see which you like better, considering all the angles. It's hard to read this board and not come to the conclusion "I have to get a BP/wing or I am laaaaame", but I really think some of the "frills" in jacket BCs benefit recreational divers without interfering with our enjoyment.
And you can get a BC cheaper than a BP/wing. I just ordered a back-inflate Triple-L Orion for $180. By all accounts, it's a rugged BC, and you can't get a BP/wing for that.
Anyway, I'm not trying to disagree with the prevailing sentiment here, and I'm sure I have the least experience of anyone on this thread, but maybe that kind of voice is important in this ongoing conversation. Some of us are not as "bleeding edge" as a lot of folks here, and we're just trying to have fun. For us, a weight-integrated BC, maybe with some nice pockets and a squishy, comfy jacket is really a solution that will last us years and make us very happy.
Gregg