I used my QD for about 50 dives before switching to a BP/wings.....if you're interested in a used one size XL...;-)
Note that most of my comments here are "tainted" by my conversion to a BP/wings. I switched to the BP because I was looking for a less bulky BC without all the "stuff" (storage pockets, weight pockets, extra straps, etc.) that clutter up the front of many jacket BCs. That being said, as jacket BCs go, I was happy with it.
It is a BIG BC. If you plan to travel with it, it takes up a ton of space.
Weight pockets -- I have the older pockets with just the velcro. I never had one slip out on me, but it is something I was concerned about. I paid special attention to caring for the velcro and making sure the pockets were secured before entering the water.
I found it to be a comfortable BC, but the pockets are (1) massive; and (2) hard to use give the intrusion of the weight pockets and the high position of the zippers. I could fit things in the pockets (back-up light or Halcyon surface marker, for example), but using them underwater with the weight pockets in was somewhat hard. One nice thing about the pockets -- there is a built-in clip sewn into the inside of one of the pockets -- perfect for securing car keys or other gear so that you don't lose anything if you open the pocket underwater.
There are 6 D-rings -- 2 on the shoulders (useless -- too high), 2 at mid-chest level and 2 on the front, bottom of the BC. Those at mid-chest level are sometimes hard to "hit" underwater without looking at them since they are small and the end of the adjustment straps has a plastic ring on it that is usually in the same area. I did find the left mid-chest ring to be the perfect place to clip off my SPG (no console). I could see it without un-clipping the SPG by just looking down. Those at the bottom of the BC are also somewhat hard to "hit" since they are smaller.
Adjustability -- Straps are easy to use and adjust.
Dumps -- 3 -- inflator hose, back right and right shoulder.
Bottom line, as jacket BCs go, it is a solid choice -- well-built, rugged and user friendly. If you are looking for a jacket BC (non-rear-inflate), I don't think you'll go wrong with the Pro QD+.
As for price -- I think my LDS is selling them for about $450-500 the last time I checked.
Hope this helps.