Due to their professional telephone conversation and the apparent sincerity of Dave the sales rep, I chose ProMaster despite some negative reviews on this website. Their price was competitive and I checked a few references who were all satisfied. The installer Marcin understandably arrived a little late due to traffic and set about his task in the most meticulous and organized manner. Before starting he laid out his parts, down to the last nut and bolt, in a very structured fashion and was not guessing or lost at any time. The doors and hardware are top quality and were very competently installed. Marcin completed the installation in the promised time and left the work site clean. More importantly, the doors appear to be working very well. I really could not ask for more.