When I did my research during Christmas, Samsung 840, 840Pro and Crucial M4 had the best reliability numbers, and the best performance numbers. NOT Intel, as I have thought, Intel was close though. I bought a non-Pro Samsung 840, and it's an EXCELLENT drive so far. Super-fast and no problems so far. All I hear about OCZ is that they are very unreliable and people constantly have to update firmware to fix some issues. I just put my Samsung in and it works like a charm.
Here is a great site to compare drive performance. Regular 840 is still way faster than 830. And it costs way less than Pro. Of course, if you have money, get 840 Pro.
http://www.tomshardware.com/charts/s...marks,129.html