I have a Remington 597 .22LR. I am quite pleased with it. I would say that it is on par with the Marlin 795 and the Remington 10/22. Of course, each has features that some may value more than others, for example, I've found my 795 to be the most reliable and accurate .22LR semi-auto I've ever shot. Over 3000 rounds without a single failure with more consistent groups than any other. I don't own a 10/22 but I've shot one several times, still accurate and reliable, but the 10/22's strength is flexibility, there are more ways to customize a 10/22 than I can count, you can make it into the perfect semi-auto .22LR to fit your use case.
Back to the Remington 597. I was considering another Marlin, maybe a model 60 or 70PSS, I wanted something similar to my 795 but I wanted to leave it with iron sights, stock sights even. Mainly to teach my boys the basics, but still have something that is a little bit fun. It works, I zeroed it on the 50 yard target at the range and put 100 rounds through the same half dollar sized hole, sure, there were a few flyers, but that wasn't the fault of the 597
. At 100 yards, the out of the box iron sights make it a little harder to aim for the same spot but I still felt that it was quite accurate (I should try it with a scope).
I have had a couple of rounds fail to feed, the previous round's shell will eject, the bolt will close, but no round in the chamber, I really don't like that in a rimfire because I was always taught not to dry fire them, but that is what ends up happening. I haven't quite figured out what the cause could be, it seemed to happen to the 9th round, after firing the 8th round, so my suspicion is that it is magazine related, but I'm open to suggestions. I have more magazines on order, but I have no idea when or if they will arrive.
On Magazines, the Remington 30 round magazines review much better than the after market 30 round magazines for the Marlin 795. The Rugers still seem to be the best though. With my boys, I prefer 10 rounds at a time, give them a chance to look at their targets, take a breather, then fire 10 more.
So, why choose a Remington 597 over a Ruger 10/22. Well, its up to you, I think that it is slightly better out of the box for my use case. I'm the kind of person that can't leave things alone, if I got a Ruger 10/22, it would become a project gun, but I'm busy, so I didn't want to be tempted with projects. The 597 has aftermarket accessories, but there aren't 1000 videos on youtube about it. So if you want something good right out of the box, the 597 is for you.
I have fewer good reasons for choosing the Remington 597 over the Marlin 795. The 30 round magazines could be one. They seem to be easier to find right now. I suppose brand loyalty, you have a nice Remington 700 rifle with an 870 shotgun in the safe already. Maybe your dad gave you an old Remington 121 pump action for your 13th birthday and you want to do the same for your son with something just a little more modern.
To sum it up, I really like the Remington 597 semi-automatic .22LR rifle. It'll be great for shooting paper at the range to hunting small game. If you are considering a semi-auto 22, this should be on your list, if that is the one you can find in stock somewhere, buy it.