The Marlin Model 60 was originally the Marlin model 99 which was introduced in 1959. A couple changes like a bolt hold open and less expensive wood and it became the model 60.
If you've handled both the 60 and the Ruger 10/22 you can see that, without even getting into the internals, one is not a rip-off of the other. The 10/22 is box magazine fed, has a much wider receiver, uses a barrel band, etc..
There are companies that are putting out trigger upgrades and spring kits for the Model 60 now. The heavy, "crunchy" trigger has always been the Model 60's Achilles heel.
If you even think that you will start throwing parts and money at a .22 rifle and are the type that likes to keep improving something until only the receiver is what's left original, buy the Ruger.
If you want something accurate out of the box, serviceable, durable, fun as it is and all you might add is a scope, get the Marlin. A box magazine fed version is available, The Marlin 795.
To throw another into the mix, the Mossberg 702 is similar to the Marlin 795 but around $20 cheaper if you shop around. Not enough to sway me from the accuracy of the micro-groove barrel of the Marlin (just my opinion).
Edit: I have two Marlin's. A 60 and a 99. They've been a lot of fun. I've had issues with certain ammo types but once you figure out what any .22 rifle likes or dislikes, you're good.