I like the light weight without having a real skinny barrel. Skinny barrel rifles are difficult for me to shoot well offhand, but not my Tikka. It is accurate, and so far I have no problem with any of the plastic parts. Even the detachable magazine is OK as it fits snug and does not rattle. And as has been mentioned, when it feeds a cartridge you can not even feel it happening. Sweet.
I don't like the rings, I have never had much luck with aluminum rings, I use Conetrols on the Tikka. And I guess I am the only one that ever bought a Tikka that has a lousy trigger. Blah, blah, blah from everybody about the great trigger...mine sucks. It is adjustable for pull weight only, and has lots of creep and overtravel. Before I could find a replacement / aftermarket trigger, I shot the rifle enough that I have gotten used to it so I will shoot it as is.
