I owned a Kawasaki GTO 110 89' model in a fine condition but 2 stroke bike sound never buy me.
I agree 4 stroke sound of single piston engine is not good too but way much better then 2 stokers, and yes cg Honda etc... are no match for RX and GTOs. I know very well I have experience of keeping GTO 110.
I like sound of 3 / 4 cylynder 4 Stroke Engine heavy bike only.