Updated following my trip to Hong Kong, Shanghai and Japan!
1: El Toro, Six Flags Great Adventure
Wild. Airtime is insane. It is simply an epic, epic rollercoaster which gets almost universal praise from all who ride it.
2: Skyrush, Hersheypark
The airtime on this coaster is almost too much. It makes you scream and shriek. It is like no other coaster experience. The lift hill alone is just madness. The first drop is incredible.
3: Maverick, Cedar Point
Awesome. The airtime, the twists, the launch, the crazy banked bits. This is one of the best coasters in the world.
4: Raptor, Cedar Point / Monster, Walygator Parc
Raptor and Monster represents a kick ass layout on an awesome ride model. Genuinely, this is a top, top class inverted coaster and classic from B&M. Intense or what!
5. Eejanaika, Fuji-Q Highland
This ride is actually quite vicious. But it's like nothing else I have done. I certainly couldn't ride again in quick succession but this is a thrill and intensity like no other ride.
6: iSpeed, Mirabilandia
Crazy pacing and relentless twists. The first 30 seconds are sensational
7. Schwur des Karnan, Hansa-Park
This is a rarely found in Europe "Balls to the wall" type coaster experience. If the stress of the indoor drop doesn't get you, the ridiculous layout will. I love this so much.
8: Fury325, Carowinds
In the evening, with the darkness falling, this is a beast of a coaster offering speed, airtime and comfort in one. Wow!
9: Helix, Lisberg
Wonderful coaster. There isn't much else to say about it. Especially at night on row 1.
10: The Smiler, Alton Towers
Sorry. But I bloody well love it. Gerstlauer make some crazy coasters and this is one of them.
Special Mentions that may well have made my Top 10 if I re-did it again:
Nemesis, Top Thrill Dragster, Space Mountain (Magic Kingdom), Wodan
I am looking forward to re-riding Helix, El Toro, Maverick, Skyrush and iSpeed again in the next few years to see if they will maintain their ride quality!