Thanks for the great review and great looking steak, too!
In my typical fashion, I ordered one this morning and then came here looking for reviews. :-D
I got approx. 100 ft. line of sight and approx. 85 feet through an exterior wall and two interior walls with the IBT-6XS. hogaboomer. My unit was placed on a table away from the grill being used. Hope this helps of course everyone's results will vary.