I would have considered myself to be an enthusiast for as long as I can remember, but obviously when you're younger smaller rides have a bigger impact on you.
Crazy Loop (PI) - My first vertical loop. I absolutley loved it! Everyone always said it was so rough, but I was so small my head couldn't bang against the harnesses, so I loved it! The height restriction soon went from a 1.2m to a 1.4m, so I had to wait a couple of years to ride it again!
Hyper Blaster (PI) - My first S&S tower ride, and still the best I have been on. This was my first experience of airtime, and I thought it was incredible!
Oblivion - I've ridden it so many times nowadays it just doesn't do much at all, but back when I used to go to Alton on the odd occassion, it was bloody terrifying!
Apolocolypse - This ride still does a lot for me, because I've only ever been to Drayton twice. Nothing really attracts me there except this. But I have never come of a ride with so much of a rush after standing up on this thing.
Kumba - Now, when I first came off Kumba I absolutley loved it. It was my favourite coaster I had been on at the time. But I went back a few years later and it wasn't actually that good. Either I hyped it up in my head too much, or it got overshadowed by SheiKra, or a bit of both. Nevertheless, my first impressions of this ride was that it was absolutley incredible. I like something a bit different from consistant, intense positive Gs now though, but it's still cool.
Top Thrill Dragster - Just to hit that speed so intensly is enough to get anyone who hasn't done anything like that before excited! An absolutley incredible sensation.
Riddler's Revenge - I actually thought this was awsome, and the only stand-up roller coaster I would actually do again. It was element after element after element, and the forces on your body, since you're stood up, are absolutley insane.
But, as a side note, Dragon Mountain at Marineland was so strange. I have never, in my entire life, come off a roller coaster so confused. I didn't know if it was awsome, or complete rubbish. It was as if someone, with no consideration for finance, just built this riddiculous coaster on RCT. It made no sense! In terms of jacking off to coaster design, this coaster was no winner at all, but yet, it had something that was slightly awe inspriring. Very strange.
There are also a few others, such as Batman, Rita, Raptor, Blue Streak, Goliath (La Ronde), SheiKra, Irn-Bru Revolution ( I used to love that when I was younger) and Villian at Geuaga Lake ( I love a rough woodie), but those stating before are the ones that stand out the most.