I like a reverse sear on a pork loin. Remove from the sear when meat hits 140, and don't wrap tightly in foil for the rest period as it will overcook. just a light tent of foil for 15-30 minutes. The meat should be a perfect 145 and still super moist with a nice crust.
Save the cooking to 190 style deal for butts and picnics. Loins are too lean for that IMO.
Modded Brinkmann Gourmet. Basic UDS. Rescued 22.5" OTS. SJS Mini-WSM. Stubbs. B&B Oak Lump.
Cannondale 2009 F8 (for burning off all the great BBQ)