I'd say Millennium Force because of the location it has - at CP which is my favorite park, and also right next to the water with a great view. Superman: ROS at SFNE comes awfully close in terms of ride experience and the view to the left is nice, but the location (park and geographic) turns me off.
This is a hard question. Right now it's Medusa West hands down. I was married on it, so it has very personal connections to my wife and I. Also, it's one of the best steel coasters ever built imo. However, since my coaster experiences are limited, it might change. Probably not, but you never know. ;) Peace. :)
------------- Medusa at Marine World: the best coaster in the west!
You almost have to limit your answer to a coaster you have ridden. For me it's woodies (limit 1 remember) and in my experiences I'd pick Boulder Dash at Lake Conmpounce (CT). I am "sure" I would probably like something else out there better (Shivering Timbers maybe) given the chance to ride it 40 times. (I have ridden Phoenix). Also, if you could bring one back from the dead: Revere Beach Cyclone circa 1967. ------------- oh well a touch of grey kind of suits you anyway