Wanstalls for the tactical solution barrel. The magnum research barrel is really had to get in Canada however the complete gun isnt.
Mystic has great service but I remind you the barrels are much heavier.
Questar as stated has the PWS barrel. Great reviews but costly amd IIRC is 1.3lbs.
It really boils down to is you only shoot off a bipod/bench or offhand aswell as rest the gun.
If youre always shooting off a rest, weight isnt an issue, so any barrel will work.
If youre shooting offhand, IMO a 3 lbs barrel is alot of weight to add and carry around. Some like it. Ive seen alot of SR22 with heavy bull barrels in maurder kits. They end up over 7/8lbs with a little scope/ red dot.