As for my two peneth, i have one of each.. A .17 Rem c/f Sako 'Vixen' and my most recent buy, a 6.5x55 S.E Tikka t3 heavy barrel and as standard, fully adjustable, laminated stock.
Both shoot as well as I can hold if fed well. The Tikka has a few plastic bits (original mags, bolt shroud and trigger/mag well group, but to be truthful I just DON'T notice this whilst shooting the 6.5 and probably helps a little in keeping the rifle (slightly) less heavy - it is a bit of a brute to haul around if stalking!..
I have recently bought an after market 10 round ALL METAL, single stack magazine for the Tikka, and it is well worth the approx £150 to me as one of my Club's competitions is the MacQueens @ 200 & 300 yards. This interesting comp' requires 10 fairly rapid rounds loaded and accurately fired in a fairly short fixed timespell.. The faff of dropping an empty and fitting a full mag with the standard 2x 5 shot mags is sufficient to occasionally stump me with the last round being out of time?...
Because the Tikka is more designed to be one of these "Cross-over" rangework AND stalking, the stock is pretty cool and I cannot say the Sako Vixen one is any better (or worse) cos it is an Oranges and Apples comparison here for me. The Sako IS nice to simply shoulder sans any resting device though!....
If I had a Sako and a Tikka of pretty similar general design the choice for me would be pretty difficult as I am more and accuracy nut than an appearance guy, and BOTH shoot brilliantly with appropriate loads (and with my handloads).
The ONE thing that I find has me leaning definitely towards the Tikka family of rifles is that, like 'big ears' above, I am a leftie and the Tikka range is much more friendly to us Left-Hookers!! Tikka field many more in the spread having totally 100% dedicated left handed rifles - NOT just left handed stocks but right handed metalwork as in some rifle manufacturers (that is where they even DO have anything lefthand orientated at all that is!?)..... Top Marks from me for THAT Tikka !!!
ATB ......and shoot safely