Had a Savage MKII BTVS for several years, my first foray into accurate bolt guns. It delivered on the accuracy, and the accutrigger is fairly decent (can also mod to ~1# by clipping and swapping springs). Action looks and feels cheap, mags are cheap (some say they have issues), bottom metal way too thin and bends when screws are torqued, stocks are grossly over-inletted and do not leave enough material to support pillars. Seen somewhere that someone reinforced the stock with metal U-channel so that pillars could be added. Neat, but way too much work to invest in a Savage... Sold the rifle last month, was collecting dust.
CZ. It is fair to say the action is of a higher quality design and build than Savage, stocks are nicer and overall fit/finish is better. Trigger can be easily adjusted and modded under 1# with a lighter spring and possibly shim kit. Magazine feeds reliably. As far as accuracy goes, I have yet to witness in person any of these glorious "tack drivers" people like to rave about. My own 455 was so bad I deemed it defective. Unfortunately, CZ warranty service in Canada sucks, and they did nothing for me. Shot a couple other ones, and while they could be considered "acceptable", they certainly were not "laser beams". My Savage was more accurate, and I would consider my Remington 597 comparable in accuracy to the CZs I've shot. It could just have easily gone the other way, with the Savage being bunk and the CZ's being great, they are production grade factory rifles and there is considerable individual variance in accuracy. It doesn't matter what the brand is, it's a gamble every time.
What is "acceptable" accuracy, or "tack driver", for that matter? Vague descriptors without tangible quantification. I would expect rifles like Savage and CZ to provide ~1/2"-3/4" 5 shot groups at 50 yards with most types of decent (or better) ammo like CCI Std and up. Find something your rifle really "likes" and you should be able to produce more consistent 1/2" groups and under. You're dreaming if you think either of these brands will give you 0.2's and 0.3's off the shelf, and if you got such a specimen, go buy a lottery ticket right now-you lucky dog.
So yeah, I sold the Savage, still have the CZ. The 455 action is great for custom build projects

Did anyone order one of the Lilja group buy barrels? I did.