I personally like my Maverick ET-732. It has 2 probes, one for meat and 1 for grill temp. The range is about 300ft. I have actually been farther away than that and still not lost signal. Although I am sure obstacles between you and the receiver could diminish that range some, I have not had a problem.
500 gal. Carnivorous Spirit tank smoker, 22.5" weber, UDS, 1 gas weeny warmer