I have an Isla and am quite satisfied with it thus far. Then again, I'm still a newbie and have made only 12 dives with it (plus, the only other one I've dove with is the children's size BC I wore during my OW classes - ugh!) I like the fact that you can adjust the front a bit, and that there's no second clip high on the chest (it's not that I'm chesty by any measure, but I don't like feeling confined with that second strap that many BCs have). It's definitely comfortable, even when fully inflated due to high waves on the surface.
My one complaint is that the rings are kind of cheesy and not really where I'd like them to be (I think this is a fairly common problem with women's BCs). My husband's BC has heavy-duty metal D-rings in very handy places - boy do I envy his D-rings... I might have a couple sewn on my Isla at some point, once I get more experience and decide where they would be most comfortable to me (although, I guess fewer rings can be a plus, in that they force you to take only the essentials and not wind up with 15 "extras" dragging all over the place.)
I did a lot of research before buying my Isla, and the one theme I kept hearing over & over is that BC preference varies tremendously by diver - you just have to keep trying them on till you find one that "clicks". My LDS didn't have a lot of selection, but I tried what they had (including non-women's BCs) and I think I made a good choice for me.
Good luck!