I have both K and N frame 357 magnums, model 19's, model 27's and 28's.

The only difference between the model 28 and 27 is the finish and checkered top strap and barrel rib. I like both models very well. My favorite is the 3.5 inch model 27.
If you are set on a 5 inch barrel it will have to be a model 27. I have one of those as well and it shoots and handles great.

Shooting 357 full power loads out of an N frame is not bad as the gun is rather heavy. You will notice recoil more from a K frame with full loads.

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SWCA #2421