They are both good dependable guns. The Tikka has more plastic but it's tough stuff.
I think you should handle both and just pick the one that feels best to you.
PS
Look at the scope mounting system of both and what mounts are available.
+1. The Sako comes in a true, short action if that matters to you. If I were going with a long-action cartridge, I'd save the money difference and buy a "better" scope to put on a Tikka. If I wanted a short action cartridge, I'd go with the Sako just on principle.
Best of luck with whatever you decide.
Dave