Good guns. Thats a good price. Basically these are the economy model of the 3913, and not stainless. I really like them. I have had many 39-series pistols, and they are excellent carry guns. Mags for the 39 series fit, as do most holsters. They are a very inexpensive alternative, and not at all bad quality. Mine shot 2" groups at 15M with factory ammo, and did this without any failures.
My only gripe with these was the darn magazine disconnect. You have to have a mag in place to get the hammer to move. So, if you want to dry fire, which I do all the time, you have to insert a magazine.
I found out later that if you drift out the rear sight, you can remove the mag disconnect, and replace the sight. I have since done this on all my Smith autos, and now I'm very happy with them.
For about the same price, if you don't mind DAO, you can get the 3953, which is stainless and has some nice touches, like front-strap checkering and a smoother slide contour. However, this is really a non-issue if you are set on DA/SA.
The sights for a 59-series are easier to find, and they fit the dovetail of a 908. I found a front night sight for a 5906, and it fit right in place on my 3913.