This outfit is pretty sharp. First, we learned about C-H-I from Twin Cities Consumer Checkbook which gave them 100% quality rating with 67 reviews. We had a sliding deck door where the frame was broken and we knew we needed to replace it. We had builders grade vinyl windows in our 17 year old home and hated them because they were so drafty. Several windows had seals fail, another had hardware fail and two windows the blinds moved when the wind blew in the winter. It was time to replace a bunch of them and we opted to do all of them. We had seen countless ads for major window manufacturers from the Upper Midwest and were stumped on trying to select a brand. In our research, we found some advice that suggested rather than decide what brand windows to install, first decide who is going to do the installation. A good installer can make a mediocre window pretty good. A bad installation can make a really good window not so good. So, we started researching installers. Craftsmen Home Improvement was all A's across the board and installs all those major brands we had read about so we decided let the pro's suggest which way to go. The sales guy showed up and told us the most bang for our buck would be Richlin Windows made by the Hayfield Window Company in Hayfield Minnesota. It's an upper echelon vinyl window that worked best for our situation. No pressure at all. There was about 5 weeks lag time from signing the contract to work beginning. We had been told it would be 4 guys working 3 days. Instead it was 2 guys and 6 days but we were OK with that. Our sales person said we'd be able to keep our blinds (we hadn't even thought of that) but after the windows were installed, some of the blinds no longer fit. No problem. The blinds were trimmed and modified by the installers and we are looking good. The windows are guaranteed for life and the installation has the same guarantee. In fact, whenever we sell the place, the guarantees cover the next buyer's lifetime, as well. This review is written in July so we haven't been through a winter with the windows and new doors yet. We can tell you the windows are WAY quieter than the originals. Finally, the installers are people you'd want in your home. Quiet, fast, efficient, friendly and constantly cleaned up the house after each day. You could tell they cared about the job they were doing.