A large proportion of sporting rifles will not shoot consistant 0.5" groups at 50 yds. That includes the Marlin 60. It is a great little rifle for the money, but you would have to prove the "regular 0.25" groups" to me at 50 yds. In fact, few shooters can consistantly shoot 0.25" groups at 50 yds with any rifle. If you can shoot the Marlin that well, I suspect you could win a lot of small bore matches.
Back to the topic at hand.... A good all around 22 rifle is the Marlin 39A. Very hard to beat for general use. Lever actions are just plain fun to shoot and are good for plinking, hunting and some target shooting. They aren't competition rifles.
Another good choice to me would be the Thompson Center R-55 Classic which is a semi-auto rifle. They are usually very accurate right out of the box. You need to keep the action clean on them however. They are made the way rifles used to be made.
Bolt actions.... I like the CZ 452, Savage Mark II Classic, Weatherby Mark XXII, and the old Remington 541's. All of these are sporter rifles. I generally prefer a faster action for plinking. And you often don't need the accuracy of these rifles for small hunting at normal distances. Even though I love these rifles, I do not suggest them for plinking. There are just a lot more fun to shoot rifles around.
I honestly enjoy plinking and hunting with my stock Ruger 10/22 deluxe. It shoots reasonably well and is a blast to shoot when you have the need to do some serious rapid fire plinking.
Choose what you like. The Marlin Model 60 is very popular and a good value for the price like the Ruger 10/22. The Marlin will usually outshoot the Ruger out of the box.