I guess I'm the odd man out here, I played them all, a lot. In the WS line up, I preferred the H series with a 12 fret neck. A touch warmer than the others. It's good to be able to have that many models to choose from, and I think that playing style may enter into it a lot too. I don't like bright forward sounding guitars.
Bottom line is that you should play them all before you buy Randy. How far is Colorado Springs and Tejon Street Music from you? Big Rainsong dealer.
As far as the RS WS sounding better than the X20......ehhhhh to my ears, nope. I know I know...personal taste. Good luck.