I have a Centurion blanket with neck and 2 of the mini pulse for legs/hocks etc. No cons! Love it! One of my friends has the Infrared blanket. Seems it is more to confirm what sore and relax some. Don't treat as much as I feel I get from me. But in fairness I don't have both blankets and I just have to go off what she tells me and how I see her use the Infrared.
"Never approach a bull from the front, a horse from the back, or a fool from any direction"
I have a thermotex blanket and I love it! the only bad thing is having to plug it in when your horse is being bad. I used it on my old horse that was really cinchy and would try kick you when you put his blankets on, but after a couple of treatments with the thermotex he never tried kicking me again. I have the boots and the blanket and both work great!