I recently bought a used IZH61. Nice shooter. I also have the Sig MCX. Took some polishing and tweaking to get the action to cycle properly, but it's since proven to be a reliable fun-gun.
Both are nice little pinker. The 61 with the shorty forth will do between a 1/4 and 1/2 at 15 yds. The mx is a blast. Pellet seating tool a must for the belt to function properly.