I've done both methods - sear then bake and bake then sear. Theoretically, the reverse sear should give you a more even doneness. I've found it easier to light my Big Green Egg and levelize the temp to around 400* and then light my Ultra Sear grill and let it heat up. Once the Ultra Sear is up to temp, I sear. If the Egg is ready, I move the meat right to the Egg, if not I'll let the meat rest a few minutes until the Egg stabilizes. I pull the meat at around 125* as my wife & I like rare. I usually dry the meat, rub with a little evoo, and then season with sea salt, fresh ground pepper, garlic & rosemary. I use this method for both steaks & roasts.