I recommend Samsung. The Samsung ssd's have a stellar record. Their real world performance is excellent.
I do not recommend OCZ. They've had more than their fair share of technical and financial problems. The Vertex 4 was released prematurely before proper validation was completed. As a result OCZ wound up having to issue 5 firmware updates since its release last April. That is a lot of firmware updates to fix things.
I maintain the ssd database listed in the sticky at the very top of this ssd forum section. Here is the link:http://www.johnnylucky.org/data-storage/ssd-database.html
Scroll down to the brands and models you are interested in and follow the links to the technical reviews. You'll find multiple reviews of the Vertex 4 by the same web site. The sites had to publish additional reviews of the Vertex 4 because of all those firmware updates.