Ok i just got my OW recently, doing my AOW shortly and I've decided to buy some gear. I've figured out what regulator to get (Apeks XTX50), still trying to decide whether the Bare Velocity 7mm Fullsuit/7mm Vest is worth the extra money over the Bare Artic 7mm Fullsuit/7mm Vest.. but most importantly, what BCD do I get?? 
From reading many many threads it seems that back inflate is the way to go, I'm about 6' and only 150-155 pounds, I'll be doing most of my diving in cold water.. last time I was in the city I tried on a medium seaquest balance at a shop and it fit well around my waist but lumbar pad was a bit high, ie not right in my arch. i tried a large, that fit better, the lumbar pad was in the right spot but the waist was too big, too much slack. they had no medium large in stock but looking at the sizing chart that seems like it should theoretically be the best fit.
So I'm a bit worried about ordering a medium large balance without trying one on first and not having it fit well, does this kind of thing happen a lot? I also read about people having trouble dumping air or getting air trapped so I started looking up Zeagle BCD's (brigade, ranger, stiletto, escape) and read about people having trouble dumping air and getting air trapped
so whats the deal with that issue? also it seems like the brigade would be the best choice out of the zeagle line (and once again i again have no way of trying one on). has anyone owned both the balance and brigade that can make a direct comparison? Should I bother looking at any other models/brands? I have absolutely no way to test or try any of these bcd's out in water beforehand so I really have no choice but to order online, i'm hoping you guys can help me out a bit since you guys have infinitely more experience than i
opinions please! thanks!

From reading many many threads it seems that back inflate is the way to go, I'm about 6' and only 150-155 pounds, I'll be doing most of my diving in cold water.. last time I was in the city I tried on a medium seaquest balance at a shop and it fit well around my waist but lumbar pad was a bit high, ie not right in my arch. i tried a large, that fit better, the lumbar pad was in the right spot but the waist was too big, too much slack. they had no medium large in stock but looking at the sizing chart that seems like it should theoretically be the best fit.
So I'm a bit worried about ordering a medium large balance without trying one on first and not having it fit well, does this kind of thing happen a lot? I also read about people having trouble dumping air or getting air trapped so I started looking up Zeagle BCD's (brigade, ranger, stiletto, escape) and read about people having trouble dumping air and getting air trapped

