I've got a SeaQuest pro unlimited ... I love it, and scuba shop owners, padi employees, and friends of mine who have traded off for just one dive with my equipment will say after the dive is over, "I gotta get me one of these". It is simply awesome. For the record I've dove a few buoyancy compensators including bp/w, zeagle ranger, and too many lame rentals to count ... but for fully adjustable fit, extra low back comfort and padding, easy adjustment (this thing has adjustments everywhere) and pockets, integrated weights. It helps so much with trim in the water, I love swimming at all different angles, whatever the dive calls for or just for fun ... other than the tank you'd hardly know you have it on. So many other rigs feel like unstable balloons strapped to your body ... different angles means moving the air too much to one side or another. I've never experienced this. Check out a decent sized scuba show, where they have a pool that manufacturers are using to allow you to try out equipment or a dive shop with a pool that offers the same flexibility, it's surprising how many shops allow you to try before you buy, not all for sure, but ask it can't hurt.