Of all the .357 mags I own and have owned my two top ones are pictured below. A pre-lock Model 686 and a Colt Python.
The Python is like a Ferrari, built by hand, locks up like a bank vault and just absolutely gorgeous. BUT their internals tend to be a little fragile if a steady range diet of hot .357 mag loads will be used and you intend to shoot the snot out of your gun then their current level of collectibility and pricing (well over a $1,000 for an example in good shape) make it a dicey proposition as a range/carry gun.
The original 686 is also now aquiring a semi-cult status and I've seen some pricing out there that made my toes curl but you can still find them at a reasonable price and they are a much hardier gun than the Python. The bigger L frame is a nice compromise in durability and comfortable carry and the stainless finish is hardy and very attractive.
Now if you are lkooking for a gun to just shoot into oblivion a Ruger can't be beat. High quality gun that will last a few generations while shooting anything you'd care to touch off out of them. They are built like a hammer for hard work.