I have just RAIDed two SSDs, and I can say with complete confidence that you are all wrong. It is most definitely worth it, I hit over 1gb/s with these drives. Furthermore the SSD twice the size was only £1 cheaper then two SDDs. As far as the reliability goes, that is not something you need to worry about, modern SSDs do not fail like they use to. Make sure you motherboard has an Intel RAID controller. If you can get one with six Sata 3 ports you can RAID more then two, if I were you I would get 4 840 Evos. And another thing RAID DOES support TRIM.