Not having to insist to get a response and them being so efficient is a huge plus.
I had a problem with one of their products under warranty and contacted them by email. I was a little skeptical seeing that the contact was in the USA and I'm in Spain, but they immediately helped me try to fix the problem, and when they saw that it wasn't working properly, they offered to replace it. In less than three days, I had a new product in my hands.