I do have a thermobob, thats where all of my temps where taken. It does stabilize the temp, it no longer runs really cool in the mornings or cold days, the switch is just a small step further, I dont think its good for it to regularly get 30-40F hotter if it sits around and idles, for the same reason it shouldnt sit below 160F without the thermobob. Should you actually let it sit and idle that long, no.q.v., Post # 34 above.
If you'd prefer running a hotter (than stock) nominal operating temperature, a Thermo-Bob, with its higher (than stock) temperature thermostat, might fulfill your objective. As to, "consistent," temperature range, don't know of any damage caused by stock coolant temperature excursion (within manufacturer's design limits). Regardless, Thermo-Bob stabilizes coolant temperature, beyond stock cooling system's capability.