Lol this is an older thread and believe it or not, we still haven't purchased our bcd's yet! (BTW, I'm the OP) Life got busy, crap happens...you know the drill! Anyway, now that I've got some time now to revisit this, here I am back on scubaboard!
I know everything's a compromise and nothing will be perfect...and considering our trend (reality) has been only 1-2 trips down south per year, I think it makes the most sense now to opt for something like a travel bcd. I'm thinking about the Oceanic Biolite at the moment, but also looking at the oh so sexy Scubapro Hydros Pro and Tranpac XT.
Most dive shops I've come across so far only rent the jacket style bcds. I had to drive 1.5 hrs to try a bpw setup. I doubt I'll get a chance to try anything else, although my LDS might have the Biolite and Scubapro Hydros for me to try in the pool. Fingers crossed for THE ONE!
If you're looking for something light for travel check out the Oxycheq
http://www.caveadventurers.com/store/cave-adventurers-harness-oxycheq-wing-and-ultra-lite-plate.html
I just saw the Aqualung Outlaw which also looks pretty interesting. It is ridiculously light and modular. Haven't laid hands on one though. There's another thread on here with people discussing it. It's still fairly new and I'm curious how much weight the plastic attachments can support.