I currently have two Tikka T3s, a blued synthetic in 30-06 and a Hunter wood stocked model in 270 WSM. They are great rifles, the actions are superb, and the accuracy is most excellent (5 shots in .71" w/ 30-06, and 3 shots in .4-.5" w/ 270 WSM). I think Tikkas synthetic stocks are among the best i've held, they have a high fiber content and are very stiff; also, I do not find my stock to be slick or difficult to hold on to.
I don't know anything about Beretta's CS in relation to Tikka, the one time I've had to deal with them was with a U22 pistol, and they sent me a new one relatively quickly.
Tikka's have kind of ruined me for cheaper rifles, every time I look at buying other rifles in the $300-$500 range and usually end up deciding that I would rather just spend a couple hundred more on a Tikka and know that I'll wind up with a quality rifle that I like. If Beretta would import the Tikka's in 9.3x62, I probably would have gone with one over the Ruger African I just picked up.
As an aside, some folks have said that they have trouble single feeding Tikkas... I'm not sure how, that is all I do when developing a load at the range. Just leave the mag in drop a round through the ejection port and work the bolt... done.