The Tikkas are nice rifles, and I have handled a couple, but I prefer the X-Bolt. I have a Stainless Stalker X-bolt and I am quit happy with it so far,...light and balanced,...accurate,...smooth reliable function,...I like the detachable rotary magazine,...and on the composite stock models the grippy, rubbery Dura Touch Armor Coat is excellent. The X-Bolt has a bit shorter bolt lift than the Tikka, 60 degree vs 70 degree.
You probably can't go wrong with either. If you can, go handle both rifles and see which one YOU like best,....A friend of mine was trying to decide between the Tikka and X-Bolt and I suggested he handle both to see which one fit him best and he ended up buying the Tikka.
Now,.. with all that being said,..I still like my A-Bolt II Medallion best of all, lol.