Word of wisdom, don't use RAID as a boot device... really, it's not worth it. First, there is no real increase in speed with RAIDing hard drives except for streaming data, the OS and apps will load just as slowly as a normal HDD (since access time is the bottleneck). If it's as a RAID 1, you might as well use something like Acronis doing partial backups every other day. The other problem is the hassle, sometimes the OS will play nice, some times it won't, and since it's a boot drive, it'll be hardware RAID, which them means transferring to a new system will be problematic.
I've used RAID as a boot drive, and it caused nothing but problems in the long run, not to mention minimal speed increases for the work I was doing. Use raid for maximum availability of large amounts of data, or really high throughput of streamed temp data. For anything else, there are usually better options.
As for the topic at hand, my biggest concern with SSDs apart from price is reliability. So many horror stories of corrupt data or failed drives, it puts me right off. I know they shouldn't be used for critical data, but it's just a headache I could do without. I know that for a lot of people, they can go error free, but anyone who knows me can testify to my 'luck' when it comes to problems, lol.