The discontinued "Six" line of double action revolvers are pretty classic 357's. i have on several occasions thought of taking a used one home from a LGS or gun show if I had had the funds at the time. They are a little smaller than the GP line and have a slightly more classic look than any of Ruger's current offerings.
It's definitely something to look into, but you can't go wrong with the gp100 or sp101 either. If you haven't yet, I strongly suggest trying to find one of each in person and seeing how they feel in your hands, then buying whichever one wins.