Go ahead and shoot it and *YOU* tell *US* how you like it.
Overall, I like Blackhawks, I own a few variations myself.
I've heard that the 9/.357 version is more accurate with .357's than with the 9's because of the diameter difference (.355 vs .357). But that's a smaller difference than with the convertible model I have .45ACP (.451) / .45LC (.457).
Mine definately shoots better with the .45LC.
I also have a 4" Vaquero Birdshead .45LC (case hardened finish) and a 6" Stainless .357 Blackhawk. I like them all, they're nice guns and a rugged proven design with millions of copies sold over the years.
The only modification I suggest is the addition of the "free spin pawl". I have these in two of mine and it makes loading and unloading a lot easier.
Enjoy your new toy!