I would gladly have sacrificed one videocard for a Revo3x2. I wish I could afford one (or even find one!). I'm currently booting from a single-layer dual-Sandforce Revo3 which limits me to a mere gigabyte per second on sequential reads.
You're not missing much. Seriously. The PCIe solution was an in-between product and just part of the growing pains of SSD itself. If I had to get into OCZ's head, it was a great solution they could do at the time while waiting on the rest of the tech world to catch up. But for $700!? Not a lot of boards even booted from it
Right now you have the S/ATA 6G standard and the OCZ3 which mate perfectly IMO and can only get better. A Vertex 3 250G drive does really well compared to either of those Revo's, and doesn't take up a precious PCIe slot. Sure it was something to drool over, but it was only a very short period of human months to match them things...and just let idiots like me actually waste money like that. I'm like Larry King..."I'm curious", and that can kill a dozen cats on endeavors like Revo purchases on a whim and "just to find out what the hype is". I'm seriously shaking my head at myself in guilt most of the time.
Like pro fighters, it's only a matter of time before that belt gets taken. However, in computer terms you buy the belt or wait two quarters to snatch it. Example? The 60G OCZ Apex was $375 and was mid level...Agility3 is seen less than a bill now. *sigh*