Zerorez was very timely and kept me in the loop about the windows during which they would be here. When he got here he got down to business and did his thing. It's a very, very convenient service and the work is outstanding. This is the third or fourth time I have hired them and I've never had any issues at all. The prices are competitive. I've had the same technician at least twice, his name is Dennis. They're very professional and they're good with communication. That's about all I need.