I have been playing with a few, because they have been, and are, so inexpensive.
I was able to obtain a few pink ones under the Mossberg 702 label, and they have worked well.
There are several videos on line to improve the trigger with a little effort. The 10 round magazines are available. I prefer several of those to the 25 round magazine.
The current model I would recommend is the RS22L1811TH. It is the black Rossi model with a threaded barrel. I threaded the barrel on one of the 702 rifles, and it worked; however the time and trouble it took was not worth the extra $30 to buy the variant threaded at the muzzle.
That variant is available online for $149 with free shipping. (does not include transfer fee)
.22 rimfire silencers work well and are easy to make. I recommend using the ATF form 1 to do so legally, at least before the zombie apocalypse. The $200 tax is cheap insurance at this time.
Yep, stealth is going to be a huge factor. During WWII, the British drew up specifications for a firearm to be used by Auxiliary Home Guard units against German sentries, guard dogs, etc. They settled on a .22LR rifle with a threaded muzzle, fitted with a suppressor. I don't recall whether they bought the rifles from us or received them via Lend-Lease, but the Winchester 74 semi-auto was the rifle of choice.
They never needed to use them, but I don't think we'll be as fortunate.