ive got the ruger and really like it.
go into it knowing that its a real work out for your thumb!!!!
by far the stiffest wheel gun ive ever used, which surprised me considering its a 22.
but after shooting it a lot it is getting better.
i hear replacing the springs with some after market ones and doing a little polish to it makes it dream like, on my list of things to do this winter.
the front site on the Ruger is a excellent FO one that makes shooting nice as well.
the Alpha ive fondled and shot once and i would never buy.
feels cheap and like mentioned above if you had any problems with it youd be high and dry.
the smith i have not tried but its a smith so a person has to assume its nice.
id like to try one to compare it to my Ruger.
the main difference i can see between the Ruger and the Smith are that the Ruger SP is a smaller gun as the SP is their line of carry wheel guns.
i didnt know that when i picked mine up, for some reason i thought it was gonna be the size of my GP100, in fact i was expecting it to be what the alpha is for size.
but now that i have it the size is really nice for a 22.
the fit and finish on my Ruger is super nice too.
where i you id cross the Alpha off your list and stick to either the Ruger or Smith.
if your able have a fondle and see if you prefer the full size or smaller size - that may well be your deciding factor.
SP-101-22 compared to the GP100 i have.