Sata II is fine for current SSDs. They seem to top out at less than 250MB/s read and less than 170MB/s write under the very best conditions.
Also, I'm going to be doing raid not for security (mirroring 1) but speed (striping 0). Fast is never fast enough for me (lol fast)... and I mean why not RAID if it's going to cost you roughly the same to buy 2 smaller SSDs as buying 1 more expensive SSD (2x30GB vs 1x60GB) when there are speed advantages? :-D
Actually, I read that OCZ is also experimenting on a SSD with a built-in "internal raid" controller. Not sure if it will ever be released, but the idea is certainly there.
Also, with internal raid, you have to wonder WTF they're thinking since SATAII tops out at 300MB/s when an internally raided SSD will easily go over that on read. Maybe a nice concept to show off SATAIII when it comes out?
As far as reliability, I can't say that for sure for the Vertex unfortunately. MLC memory is good for about 10000k writes apparently, and while the drive has "wear leveling" technology like all SSDs, if you write to it a lot you can get it fucked up quickly. There's marketing hype about "170 years MTBF" or whatever, but the reality is that they're giving a 2 year warranty on it currently, and it could slowly become unusable. I think it maps out bad sectors transparently though, so you should be OK... but it COULD become very bad fast if you write to it a lot... I wonder if in a couple of years, people's drives will be rapidly shrinking in size due to all the bad sectors (or "memory cells" I guess -_-) lol.
That's the risk of being on the cutting edge of technology. Like someone else said somewhere... you get cut a little sometimes
Still worth it at under $100 for me, but until then - I'll hold.