Try the Cressi Travel Light, both my better half and I are very happy with this BCD. We bought these because we travel thousands of miles every year and want to minimise the weight and volume. It is foldable with lock straps and can be packed in its own soft bag the size of a supermarket shopping plastic bag so you can take it as cabin baggage if you wish. As for all products it has pluses and minuses; however I find that the plus side outweighs the minuses with a large margin.
On the plus side:
Light weight approx. 2kg
Foldable in its own soft bag
2 large utility pockets
Plenty of D-rings and attachments
Integrated weights
2 tank straps
Snug soft fit
The prize is a under $400
On the minus side:
The lifting capacity is roughly one size under e.g. a medium size will have the same lift in lbs as most other BCD small size have, for comparison medium size Cressi Travel Light = 20.2 lbs, whereas small size Cressi Mens Aquaride BCD = 22.5 lbs, so you will be hanging low at the surface, you will just have your head above water, but that is something I can live with.