I love .22's and, ESP. Semi .22's...
Not going to get much better than what you have. I adore my 64's. I've owned a few and, the newest one in the fleet is a stainless Savage. I would gladly trade one for a '66 in a heartbeat!
I love my Rem 597...I thought I would enjoy Hi-cap mags but, honestly, it just condones "spray and, play" shooting and, makes it "clunky". It is accurate and, no eating disorders (haven't tried every ammo but, less fussy than a 64)...I'd gladly trade it for a '66.
Honestly, I owned a Marlin 70 HSC and, sold it...I've regretted it ever since! I love the Marlin semi's and, they may be my favourite but, if I had two, would trade one for a '66.
I am no 10/22 fan and, would trade one just to pet a 66!
Gotta love the opinion posts!