Well Dueling Dragons (Dragon Challenge) would be hard to survive as it is a pile of junk metal on the ground right now (closed).
If you can do RNR, you can easily survive The Hulk. My DW is not a coaster person, and the Hulk is her favorite coaster. VERY smooth ride, very gentle arcs and loops. With the accelerated launch there is no time to worry about what is about to come - 3-2-1, annnnnd - we're flying!!!! The only way I got her on the 1st time was we were given a free FOTL after a disaster ride on Ripsaw falls. Now it's on the itinerary every time.
IMO, RNR is a bit of a snore after the lift first 30 seconds. Then it turns into more of a wild mouse coaster. And a slow one at that.
DD is probably the most intense coaster I have ridden; will miss it. It was not tall or fast, but the curves and loops were so tight that the g-forces were incredible. It's the only time I've been on a coaster where I have thought "I could barf" only then to think, "nope, at 3 g's ain't nothin' comin' up anyway"...
BTW - you'll get a lot more information about these on the Universal Forum a bit further down the main page here on DIS.