Of all the rifles I've owned over the years (many), the only ones I've kept are a specific CZ550 and a modified Winchester Model 70. Let me explain.
For starters, these are the two best rifle actions out there (my opinion) for building a custom gun on. All metal parts, good triggers, CRF actions, wing safeties. Out of the box, both are good, not great. Pros and cons of both:
CZ 550
- They're quite heavy. Lots of steel in this gun. The standard stock is a bit thick for my taste, but the Lux stock is very nice. Good, slim wrist and a very nice shadowline cheekpiece. I've had some issues with the actions being sticky and having less than smooth feeding. The triggers are decent. Accuracy tends to be good. Bluing is very good. Overall, I'd recommend a Lux model, the others might leave you wishing for more. Another note on the 550 line of rifles, I find that the barrel lengths are often not what I would prefer. Too short on some, too long on others. But that's a preference thing.
Win 70
- The Featherweight is a very nice, slick, smooth, light, svelte action. Accuracy tends to be good, great once you replace or re-bed the stock. Great safety, very nice actions. The issue here is the stock. They're just too thick around the wrist and the bedding is not done well. With that said, they make a phenomenal candidate for a custom stock.
Anyways, those are my thoughts. I tend to be very critical of my guns, and these have made the cut, with custom work done to both.
If I had to pick one: DEFINITELY the Winchester.