Don't know how much I can add to what's already been said, but here's my insight from a few years of playing the game. Buy the best glass you can afford to do precision shooting. Not the most magnification, not the biggest lense, but the clearest with the least color aberration and the thinnest crosshairs.
Years ago I used to do a lot of varmint shooting. A lot. I started out with a Weaver K6. Clear enough and thin crosshairs. Then I looked through a friend's T-10 and realized how bad my scope was. So I bought a Leupold VX-3 6.5-20. WOW! It was super clear! But it had too much magnification for what I was trying to do, so I backed off to a 4.5-14.
I knew an old guy who shot bench rest, and he shot a 36X Unertl scope. In benchrest where your targets aren't scampering all over the hillsides, more magnification works, but not so much for a varmint rifle. So figure out what you need. I keep a Zeiss scope in my shop for testing rifles I build, and it's a nice old 6-18 and very clear.
The other thing you need to figure out is what you really mean by "precision shooting". Some people mean shooting unknown distance out to 1,200 meters, others mean shooting their deer rifle for groups at 100 yards. A deer rifle at 100 yds is not precision shooting, just FYI. Typically neither the scopes nor the rifles approach presision shooting.
So if you just want a nice scope for your "really accurate" deer rifle, lots of scopes can fill that bill. If you want to scope your $10,000 custom benchrest or tactical rifle, you can easily spend $4,000 by going after a US Optics or Nightforce scope. Figure out what the purpose is, then figure out how much it makes sense to spend.