I certainly wouldn't, nor would I recommend, that anybody abandon one .22 Ruger site for another, especially when it involves the Ruger Mark pistols. All sites that have devoted members who actively use their Ruger Mark pistols have experiences and shooting enjoyment that never hurts to read about.
I've worked with and on these pistols since 1971, and I've kept some very extensive notes on what things can go wrong and what an owner can do to fix that issue without a return trip to the "mother-ship". I've been mainly involved with RFC (since 2004) and the Ruger Mark forums, but have recently branched out to visit other forums, like this one, just to see what interests involve the Ruger Mark pistols and to see what issues, if any, owners come across these days.