I have a friend that has the Tika Varmint in .308, It has a real nice smooth action but, I don't like the Tupperware stock.
I have the 550 Varmint with the Laminate stock, it does weigh about a pound more than the Kevlar stock but has a nice 'cheek piece' That's just right for me, even with high scope rings.
Now this is a HEAVY rig haven't put it on the scale but its got to be 13 Lbs. or real close ( Rifle, Scope, Rings and sling).
I use it as mostly a target rifle but, I have taken 2 coyotes with it ( yes I know .308 is a bit big for yotes but they don't run when hit).
I have noticed the action has smoothed out some with use, and the single set trigger is outstanding, no creep no slop, just a bit op pressure and BANG.
To tell the truth I don't think you can go wrong with the Tika or the CZ, I think both rifles will out shoot 90% of the guys pulling the triggers.