I recently got an Intel 320 80 GB SSD. It's nice but it's not FAST. Not like the 300-400 MB/s speeds I've seen from others. Now, I'm looking at a 256 GB SSD Crucial M4 and the Samsung 830. Is there one that's "better" than the other? Based off what I'm reading, the M4 is running on the 2281 SF controller while the Samsung makes its own controller. I keep hearing that the SF controllers are not reliable. Is this still true? There's a $30-40 difference in price between the two and I want a drive that's reliable over speed.