Everyone said I needed to own a 22lr because they are cheap to shoot. I jumped on the bandwagon and did the research. Buckmark and Ruger. They were the ones to buy. Everyone trashed the Sig Mosquito. I went to the Sig forum to find out why. When they first came out many did not perform well at all. Some did; many did not. They have fixed the problems encountered. Most of the bad reports still making the circuit are about the older generation Mosquitos. They are talking fact, but about a different generation firearm. That used to be the facts. Others have never even held a Mosquito, or fired one but heard someone talk about them; I guess that makes them experts. Read what the owners of the newer Mosquitos are saying; most of it is positive. Just like any other firearm out there: Most of it is positive. That is what I bought: a new one (Last January). Mine included no problems. 1500+ rounds through it so far with only the occasional FTF, which I attribute to rimfire ammo. One of the nice features of the Mosquito is the DA/SA trigger. This allows you to refire that pesky round that doesn't fire on the first strike. It's a nice feature.
So here's my take: The Ruger and Benchmark are definitely quality firearms. I am not interested in that type. I wanted something that resembled a firearm that I might use for more than plinking or target shooting, even though it does that too. I really like the decocker on the Mosquito. I have used CCI Mini-Mags and Remington Golden Bullet Bulk Pack (525 per box) ammo with no problems. I am not concerned that it doesn't shoot every brand of 22lr. There are plenty of firearms on the market that just do not like everything in their respective calibers. Such is life. I did not buy a 22lr for SD, so the inherent misfires that come with shooting 22lr do not matter. I simply pull the trigger again, the Mosquito fires, ejects the casing and shoves another 22lr in the pipe. As for one gun feeling better in your hand than another: that is the starting point. If if doesn't feel good you should not even be considering it, unless you know for sure that different grips will make all the difference. I chose the Mosquito; it felt perfect. I have other firearms for self defense in larger, center fire calibers. Good Luck to you in your research and purchase. Let us know how you do.