I was originally going to send a PM, but might put it out in the open.
I can tell your new and that you probably just want to dive. You are going to get a lot of people telling you to get a backplate and wing; there are endless threads online about why it is the best and why it is so awesome--and nearly all of the points are completely valid. First stay away from any jacket BC, they are terrible, I don't care how much or how little they cost.
For a diver like you who might get more into it, but basically just does vacation dives I would recommend a back inflate BC--my personal favorite is the Oceanic Excursion 2. Oceanic just came out with another excursion model so the Excursion 2 is discounted to $360 on leisure pro (great place to buy gear along with a few other online shops) and is a great BC. Solid , integrated weights, cam weight pockets, 2 nice size pockets, plenty of D-rings, with D-rings positioned at the hips that would allow you to sling multiple deco or pony bottles with ease.
For $360 you could get a mid level BP/W combo or move up into the $500-600 range for a higher end model. I dive a backplate and wing now (pieced together from used online) and I knew my Excursion 2 was going to be a stepping stone (even though you can dive it recreationally for your entire career), at the time I just wanted to get as many dives in as possible and for $360 to be able to dive immediately,the price was too good to pass up; especially when you took into account cam bands, weight pockets, other little accessories that added up the cost of a bp/w. There was also the issue of not having a lot of people dive the harness as singles (a lot of my older friends dive transpacs).
A lot of people are going to say threading a backplate is easy, doing xyz is easy, and they are right, but if you aren't actively diving or in a group of people that actively use bp/w set ups it can be a hassle and an obstacle.
If you are just looking for a simple no nonsense answer to get you into the habit of diving, go with the BC. It may happen that you become a much more active diver and meet new people, in which case you can evaluate your equipment and what you need. No active diver has ever had just one piece of equipment..I had one reg set. I am staring at 5 right now, with options to buy more. I have 3 sets of fins.........fml, does anyone want to buy some dive equipment?
---------- Post added July 16th, 2015 at 08:05 AM ----------
Haha, sorry. I realize now I never actually answered your question.
If you are going to get a BC stay in the 300-400 range (like my Oceanic Excursion 2). That is all you need to spend to get some decent quality new. You should also be able to pick up more expensive BCs around those prices used (may be 450, but that would be a lot).
If you decide to go with bp/w, then move up into the 500 range new. Talk to Tobin (cool hardware_52) at DeepSeaSupply or check out DiveGearExpress.com and DiveRightinScuba.com. There is a used Oxycheq 30lb wing in the classifieds that looks nice, I dive an oxycheq 40lb wing