^ I've ridden them before and never felt anything. No eye blurring or anything remotely similar feeling. Vortex was the closest I got with the eye blur. My friend Katie tells me that I'll most likely grey-out during I-305, but I have a suspicious feeling that I wont. Who knows, maybe my body can handle higher G-Forces than most others like that one guy who can handle over 12 (not saying I can, but maybe i can handle 4-5 easily and not feel anything) and not black out (Seriously, go look it up. He was on Stan Lee's Superhuman).
Will have to wait and see if I305 can live up to its name force wise