I have the older 2015 model in .308 and really like it. Accuracy with factory ammo has been outstanding, so much so, that I have bought new equipment for more precision reloading.
With Hornady 178gr hpbt match it has stayed under 1 moa out to 475 yds.
As for the cost of magazines, the high cost of the TRG compatible ones could be attributed to Finnish laws and tariffs for weapons of war (the TRG is marketed as a sniper rifle). Tikka has introduced a new magazine specifically for the CTR that will be significantly cheaper, the difference being it has a plastic boot the will not allow it to be used in the TRG without modification.
The improvements Tikka has made to the new line are right on the money as far as mods people have been doing themselves.
When the 6.5 Creedmore models start showing up, I will be purchasing one.