I've owned three Taurus 85's. Two were stainless (one concealed hammer, the other a standard "hammered" gun).
Now I own the Ultralite...by the way, I don't believe the stainless models are called "Ultralights". You are discussing the standard Model 85's.
I liked them all. The only downside to the stainless models is their weight. The weight of the stainless steel guns is about 20-21 ounces. The Ultrlight is about 14 ounces.
I carry in a front pocket (in a Galco holster). The weight of the stainless gun tended to drag my trousers down a bit. No problem with the Ultralight model.
Now, recoil is a bit snappier with the lighter gun, of course. But this revolver is not an everyday shooter. It is an everyday carry gun though.
So...if you're buying to carry...it's a good choice. If you're buying for home defense of any other reason, the stainless steel guns might be the better choice.