It depends on what you're looking for. I love the Mack launchers because they're thrilling, fun but not intense start to finish but I ride rides for fun, not for intensity. Most common Top 5 coasters in a country would be the world class ones in my opinion. I think that'd be Nemesis, Icon, The Swarm, Oblivion and maybe even Stealth (got some kind of record for the launch intensity, I think). Now I prefer the smiler to the swarm, stealth and Oblivion, and when first open it was world class. It isn't now but still a solid coaster for me. I'd guess there's around 100-200 "world class coasters" out there. Icon to me is world class. Good layout, good pacing, aesthetically pleasing, comfy, and I could reride all day without getting bored, not possible for many coasters to do that. All the B&Ms I this country are great, unlike some "good B&Ms" I don't like Galactica as Galactica but it does exactly what air was intended to do and executes it well, and not many dislike the actual ride. Perfect starting thrill coaster.