Hmm, I dont know how to go about it with the "technicality" of riding (I just do it, pretty much).
I -do- know that sidecut does make a difference (well, to a degree/extent), and i've always stuck to Lib Tech Emma Peel for a good reason -- 800 sidecut radius which is real responsive to sharp turns, if needed. Long caawrve pencil-line can be done with it, too, just remember with lower sidecut radius measurement, it can get a bit "squirrely."