I have limited experience with them but have fell in love with the one I own. I found one used for a steal at Gander Mountain and bought it on first sight. It appears to have hardly been shot or possibly not at all outside of the factory.
It's a model 52 Jackson Hunter in 280 Rem. I've made two trips to the range with it and it really seems to like the 160 grainers. I've shot five groups with the Fed TB 160's that are all under .25 and two groups at 300 in 1.5-1.7 range. It also shoots 140 HSM Bergers and Fed Bal Tips to .7 at 100 yards.
Fit and finish it top notch and the trigger is set to an incredibly crisp 2.0 lbs.
Here's my best 3 shot group at 100 yards, one ragged hole.