Ultra Crystal and Ultra Oleophobic are both great screen protectors. I had tried only the Oleophobic until recently. Then I got the Ultra Fine to beta-test. It was pretty crisp, but had a lot of noise on white backgrounds. So I took it off. Since I was changing the screen protector anyway, I decided to try the Ultra Crystal (I had the EX kit for back/side protection, but hadn't used the front yet).
To me, the Ultra Crystal feels more like the glass. Also, because it's not oleophobic, I find it looks less oily in general than the oleophobic.
Finally, just to be thorough, the Ultra Crystal does seem to be of slightly lower manufacturing quality. A lot of people (including me) have spots around the cutouts that just won't stick. I still prefer it to the oleophobic, though.