I played with both 335s but I prefer the 16x20 version because it is more versatile. A little bigger sweetspot as well. If you only used to hit flat with precision the 18x20 is more suitable to you.
Thank you Gee's ching advice.
My playing style is loving to play topspin and underspin shot. my usual rkt is very old wilson rkt , head size about 80-85 size, 16x19. but too flexible for me , especially sometime volley shot, or want to add force for passing shot, seems the rkt bending too much to affect my control. needs a bit stiffer, not too stiff, like most modern tennis rkt,
does tech 335 quite stiff in feel during playing.
tend to try 18x20 for more firmer stringbed feel , but do two version has much stringbed feel variation ??
least i think so!!!!)I do. The Vo2 max version though
There is a thread about it which I read about 1-2 months ago. I'm expecting to get a 320 Vo2 shipped this week. Will post on the differences of both racquets once I get to hit with it.
its a all around good racket it doesnt do nothing bad its all good once you get dialed in 
A lot less power compared to the Prestige. Also I felt the prestige was easier to swing and was a lot more maneuverable.
That would be me. When I said Prestige, it was the Microgel Prestige Mid. THough i'm pretty sure its fairly close to the Youtek line.
No I actually hit a lot of spin. What I notice is that I don't get enough spin with the X1 and sometimes shots would sail long. Especially when I'm chasing shots in front of me. Maybe it's just wrong form.
