I have only played with the Cobra in the gun store. Another one to look at is the Kimber in that class. I believe it is also a 6-shooter.'
I do own the Ruger SP101. It is a nice gun. I put a tritium sight on the barrel, and swapped out the grips. I also put in the Wolff Spring Kit and shot a lot of rounds through it. The trigger is now pretty good.
It is a VERY well-built revolver.