First off, those are both awesome, high end paddles. Can't go wrong in my book; if the price is ok for you. Folks seem to love AT or Werner, but not both; I love the ergonomics and flex of my ATs.
I think durability is more important than shaving 2 ounces off an already-light carbon paddle; so between the two paddles you mentioned, I'd go with AT2 flexi; which also happens to be the cheaper one. I love my ooold ATX flexi; it already feels superlight compared to an AT river glass paddle, but its a bit heavier than either you mentioned, and has larger blades, which I like (come to think of it, thats my ATX flexi bracing on a rock, in the avatar I just put up; also in my gallery somewhere).
I like my AT River Glass paddle too; its fine for most trips, and I wouldn't care so much if it got lost or broken. I'm trying to spread the wear onto a few paddles, to extend the life of the ATX.
Why not AT C series ($280 vs $430+; same weight as my ATX flexi); do you want the flex? (personally I love the flex; easier on my wrists and elbows).
AT Paddles / Whitewater / C-Series / Play Carbon
Just saw your followup post; sure thats a good size. I am 6'3" and use 197cm; I could go to 200cm but the large blade size of the ATX works great for me. You will get used to whatever you paddle with.
On second thought, thats a terrible size for you; I would be happy to take it off your hands for you
Don't lose it!! Many many paddles were lost around here in the spring floods.