Re: Cooper, Annie, Sako ?????
My Sako Quad with a Lilja barrel shoots neck and neck with a friend's Anschutz-- the guy pulling the trigger on that given day ends up being the determining factor. Both are very accurate. However, stock for stock the Anschutz was the better gun-- The Sako took some money to get there.
I went with the Sako because of accessory and stock availability; easy to order a Manners T4 ready for a Quad. Not so much for an Anschutz...
Also, to get my Quad to run .22LR reliably from the mags with the Lilja barrel required a slight polishing & ramp on the bottom of the chamber edge with a Cratex wheel. If you look closely at the factory .22LR Quad barrels the bottom of the chamber between about 4 and 7 o'clock is *very* lightly radiused and ramped; the Liljas are just square cut with a sharp edge and that sharp edge likes to grab and hang up the nose of the first couple rounds out of the mag. After lightly radiusing the bottom edge of the chamber with a Cratex wheel to match the factory Sako barrel it now feeds perfectly even with the first couple rounds out of the mags.
After fixing the .22LR mag feed issues I really like my Quad. The trigger (after being worked by Larry Gish) is a very crisp 2#, it's very accurate, and the bolt throw is very quick and smooth. I liked it so well I built a second one with everything identical except with a .17HMR barrel for ground squirrels.
I can't comment on the Cooper rimfires as I've never seen one or shot one. I have shot one of Coopers .223 varmint guns; the fit, finish, and stock was beautiful but in my opinion the accuracy was not up to the fit & finish standard set by the rest of the rifle. It wasn't my gun though so it could have been dirty, ammo it didn't like, etc.
It hasn't been mentioned yet but you also may want to consider one of the BlackOps Model 605 40X-style repeater actions once they're available...
http://snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=3463533#Post3463533
http://snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=1578671&page=1