I've got the RT-2500 BFG. We entertain a lot, so the large one makes sense for us. Here's a pic of it on my back porch. Put a brisket on at 1am this morning actually. Well, my wife did. I was asleep.

Customer service is top notch. Warranty is great. Mine came with a 6 year warranty. Although, I think the smaller models come with a less warranty. Wi-Fi equipped. I can view meat temps and control it from my office at work. Had it for a little over a year, and I haven't had any issues with it maintaining steady temperature, regardless of the time of year.