My experience is limited to four aftermarket triggers/sear
I haven't installed a Jewell, but I shot one. Wow. It felt funny on the pad of my trigger finger, but I could 'break the glass rod' exactly when I wanted. It was set for 3.5 pounds, but with no creep and a nice sharp break it actually feels like 1 pound. I'll swear it's only one pound pull, but it measured 3 pounds 10 ounces on the digital scale.
I bought the Rifle Basix trigger for old-style Rem 700 on sale for $83. It is absolutely excellent for the money (or course it ain't no Jewell or Timney, but it's a very very good trigger at less than half the cost). It creeps a little, but most people may not notice like I do. For a deer rifle, I'm totally satisfied for $83 with no complaints. If on sale again, I'll buy another.
I also put a Rifle Basix sear in a Ruger M77 (old style tang safety) and it turned the Ruger into a different rifle. Much easier to shoot, much improved accuracy, for only $30!
I have a Jard on an AR-15. It takes a lot of work to adjust it. It fired doubles when it was brand new but I adjusted it several times until I became happy. It's my USPSA 3-gun rifle.
Bottom Line: If you spend more, you have to do less work for an excellent trigger. If you are willing to do more work, you can spend less and get a trigger much better than factory stock. I've never paid to have a factory trigger gunsmithed to perfection. I'd like to hear from someone with actual first-person personal experience. I bet you can make a Jewell-like trigger out of it.
Oh, one more thing (in my humble opinion). Once you get your finely tuned first-class trigger, you'll have to learn to use it. You'll have to get rid of your sloppy lazy-finger habits. Keep the finger off the trigger shoe until on target, deliberately engage the trigger quietly and smoothly, follow through with a smooth full draw rearward, then fully release. I'd like to hear from other owners.