I've used 3Kim the second time. They are slightly more expensive. But, like my first experience, they are non nonsense, and they do a damn good job. The item is well made, installation is professional.

My interior designer and her contractors were also impressed by the workmanship.

I opted for thicker gauge steel than the usual, 1.2mm instead of the usual 1.0mm. And they have experience with taking note of the alarm sensors and wiring.