I have finally purchased my zeagle concept two in the last two weeks. I have been using similar rental BCs and I love them.
Pros:
Its comfortable, zero squeeze and sooooo adjustable. I can wear it nekkid or over a dry suit easily. Although I haven't tried it nekkid yet

. I'm also happy with the way the weight distributes in this BC. I tried a Sherwood Axis a while back and the BC forced me forwards, kneeling on the bottom was nearly impossible, I had to fight not to kiss the bottom of the pool. But the Zeagle makes neutral buoyancy effortless, its the only BC I've found that I can hold Buddha in!
Cons:
The only problem I notice with zeagle that my LDS has told me is a known problem is that it periodically does not like to deflate. I haven't had this problem with my new BC but the older rental ones periodically stuck and to get them to deflate, I'd have to pump a couple shots on the inflator and then I could deflate as much as needed. Nothing critical, just a PITA/annoyance more than anything. Although not something I would want to have to deal with in open water, in the pool it was fine but in the lake would be another story.