I own a couple Browning SA22 weapons. They are cute. They are not as reliable as the 10/22 in my experience although I have a friend or two through the net that claims the ones they own have never failed. The lock mechanism with the aft tubular magazine and the bolt having to grab the next round and ram it into the chamber without anything resembling a guide is darned near black magic.
The 10/22 is simple and it works. The factory rotary magazines are more reliable in general than most tubular magazines on most other .22 LRs and MUCH more reliable than almost anyone else's removable magazine rimfire rifles.