I personally like the Ruger as it is very reliable, accurate, and foolproof. Plus there are a number of accessories to allow you to design whatever type of gun you might like. It only handles 22 LR cartridges but I haven't found that to be a problem, they are much cheaper than the other styles of 22 rimfire rounds and found everywhere. Most of my experience with the 552 is with the gallery rifles which were chambered for 22 short only. The only 22 LR chambered gun I was around did not like to shoot the short or long cartridges. Failures to eject and feed were common with it, even after a thorough cleaning. This was in a 70's manufacture 552 which may or may not have a bearing on the problem. I know nothing of the Taurus made 63's and the same for the Browning other than it is the only gun of theirs that does not strike my fancy.