I really like the 500 series of Remington 22's. They really are great guns, i just wish Rem. had come up with better magazines. (read steel)
Remington made up several different model numbers, but for the most part the guns are the same actions with different bbls, and some other changes. Most (but not all) of the parts will interchange between the models.
I have several of them in different configurations, but i like my LH 541-S the best...
It's my go to 22lr, and is very accurate. The 541-S' are the "cream of the crop" and like new original ones are bringing obscene prices! (mine isn't origional)
All of these models are becoming collectible, and prices of them are steadily going up!
DM