Jay,
I have given some thought to the Probe LX. I have dove with several jacket BCs, and while I do not doubt the support everyone gives to BP/W (and to a lesser extent, rear inflate), I have never had any trouble with a jacket. The Probe LX looks to have everything I will need - pockets for extra weights for students, sufficient d-rings to clip gear to, etc.
There don't seem to be a lot of posts on the Probe LX...
At the moment I'm torn between getting two Rangers (one for my wife, one for myself) or getting a Probe LX for me and a Hera for my wife. I always liked the "one throat to choke" approach when purchasing equipment for various tasks - if I stick with Oceanic for the BCD that will mean I'll only need to deal with one shop for support of BCD/Reg/Octo/Computer.