I've built 3 Handi Rifles (2 stainless Ultra Hunters and a 22" blued model) all 3 shoot good without having to knurl. They are fairly inexpensive (if you don't go with the Ultra Hunter) and for the total cost to build one, I think it's the best bet for the money.
The only negative thing I have to say about them is the limited scope mounting options. Unless you bob the hammer, you're pretty much stuck with having to use medium to high mounts. But it gives you plenty of room to go with a 50 mm scope.