So I have a Tikka CTR that I just happened to be shooting this morning. The weak point of the CTR is the stock, which isn't great for precision shooting. I dropped mine into an XLR chassis.
Using some recently purchased Primary Arms 147 gr. ammo (in 6.5 CM) at 300 yards I was getting 1.5" 5 shot groups. This is in good, but not perfect conditions (variable crosswind of between 0-5 mph). Things opened up a little at 400 yards, but conditions also got a little worse. And that's using a 17x scope, which is certainly more than adequate for most applications at 400 yards, but maybe not ideal if the goal is to shoot the smallest groups possible.
Don't have any experience with the Super Varmint and not sure how it differs from the CTR (heavier barrel, different twist rate for lighter bullets?), but you won't be disappointed with the CTR, particularly if you're willing to swap out the stock. The only other upgrade you might want is a YoDave trigger spring. For about $10 you can get your trigger pull down to about 2 pounds.