i,d have to say that you cannot call any old twostroke reliable. just look through the posts on here and see how many NSR,s have gone pop!
we own NSR,s because we like them. i have never wanted any honda untill i saw the NSR250.
i would also have to dissagree that a Aprilia is a tarted up RGV? as far a i know it only uses a tuned RGV motor.