I went with Samsung 830's in the end as I'd got the impression (from reading various sites) that Apple used Samsung drives in some of their machines. (Though I could well be wrong about that).
I'd read about some issues with the OCZ Agility 3 models suffering failures and also wanted to avoid the Sandforce controller chips found on many SSD's which I also read as possibly having some issues, whether either of these were specific to OSX I really couldn't say.
Anyway, I've had no issues with my Samsung SSD sin the 3 months since I built my machine. I also used a free tool called Chameleon SSD Optimiser to enable Trim support with no problems.
Having said all that, I think you'd probably be fine with whatever you choose, I'd just try and make sure the manufacturer has a decent warranty/returns policy just in case something does wrong in future.