I just ordered my first SSD 5 minutes ago, and ended up not getting an intel one. From everything I've read, the 80GB X-25 is a DAMN good drive for the money, but $220 was just too much money for me. I ended up getting a 60GB OCZ Agility for $130 after rebate, which is a good deal more affordable for me. As far as I'm concerned, I doubt I'd notice the performance difference between the Agility and an X-25 nearly as much as I'll notice the difference between either one of them and the slow mechanical drive I'm upgrading from. The extra 20GB would've been nice as well, but I looked at my current OS drive and it's only using about 40GB when ignoring all media files, so 60 was more than enough for me.
That being said, if the price difference isn't a big deal for you, you might as well go with the intel drive. It is undeniably the better of the two.