Savage 10
Savage 12
Remington 700
CZ 550 Varmint
Tikka T3
Ruger M77
Howa 1500
Weatherby Vanguard
Howa and the Vanguard are the same rifle. They're decent, but rarely do owners report tack-driver performance. Ruger and the CZ can be hit or miss. These probably have the most beefy and solid actions of all the choices, but they don't have a reputation for always being very accurate. Like the Howa/Vanguard, sometimes you get a tack driver, but most of the time you get good hunting accuracy. That's what they're meant for anyway. Remington is always Remington. Is going to be accurate. Savage is going to be good too.
The key is stock. Whichever comes with the best stock is going to have an advantage. A Remington in a junk stock is not going to compete with a Savage in an HS or McMillan.
If you want to compare action/barrel only, then I would say Tikka is the best. It has the smoothest action, a good receiver, and the best barrel (Sako heavy barrel). Actually, the Tikka heavy barrel varmint comes with a pretty decent stock. It is free floated and stiff. The difference between the barrels that Sako puts on Sako and the Sako barrels that go on Tikkas is the Sako has a 5-shot 1moa guarantee. The Tikka is a 3-shot 1moa. 3-shot 1moa isn't that difficult for many quality rifles, but is still a great standard. 5-shot is much harder as those extra 2 shots almost always open up the group quite bit. Big difference between those two measures. But putting 3 shots into 1 minute isn't exactly small fries.
The 2nd best choices would be the Remington and the Savage. But both would need to be in quality stocks. Something freefloated for sure, some sort of bedding or bedding block preferred. Then you'd see them perform better.
Overall, the best barrel of that list would go to Tikka. The smoothest action would go to Tikka. The best factory stock by default (not counting Savage or Remington using HS Precision) goes to Tikka. Tikka also has the Sako trigger, so the Tikka will also have the best factory trigger which is adjustable in the 2-4lb range. Savage accutrigger is lighter, but it is spongy feeling and and has that stupid Glock-style safety bar on it. That alters the feel. Some like it, some hate it. Tikka has a great trigger and doesn't have to deal with that. Remington's X-mark trigger is a big improvement over the original, and it is very crisp, but still a 4-5lb trigger.
For me it was between the Tikka T3 varmint and the Remington. I chose the Remington ONLY because I planned on upgrading the trigger and stock to what I specifically wanted. Remington is the better gun for modding, upgrading and buying aftermarket stuff. However, the Tikka is a better rifle out of the box and has better barrel/action/trigger.
No upgrades and the choice is very clear - Tikka T3 Varmint. I may still buy one (in a different caliber) because it is a great gun. The only turn off is the cheesy plastic of the trigger guard and magazine. But it is a quality gun and very accurate.
My single favorite feature of the Tikka is the bolt lift. At 70 degrees, there's plenty of room for your fingers and you won't be tight up against the scope. Only the Weatherby Mark5 is better in that dept. Low bolt lift is underrated in my opinion.