Great when you're at home. I have an awesome Longacre I carry in my truck and use for day rides, but it takes up a lot of space. Would like to have something I can count on for multi day trips where space is at a premium. If I can't find a screw-on system I will be packing it.
I have one of these Chinese ones on my XT 1200 - works well, it's a combination of a cap for every wheel and a small display which shows the pressure and the tire temperature.
I can not recommend a certain company - they change on daily bases, but at the end of the day: when it works, it works well. And as it is Chinese, it mostly works...