Great experience, honestly. I was a little nervous about the whole thing -- being responsible for the accurate measurements, worried it would take a long time to process and ship -- but it all went great. One of my windows was a HUGE picture window, and it was an original, single pane. The fit has been great, and there has been zero condensation since installation (it used to accumulate ice on the inside that you could actually scrape off...). From the time I reached out to the time I had them installed was maybe 3 weeks? Felt like I was dealing with a small business -- in a good way. Nice people who do quality work.