First off, they showed up on the date and time they said they would (always appreciated).
One of the windows in our house did not close properly. Mike and one of his crew members came out, inspected it, took a few things out which we cleaned, explained a few things to me, and now working like a charm.
Most importantly, they gave me great, cost savings advice. We were prepared to completely replace the window -- and they were very quick to point out that there was no need to, just needed to do a cleaning and remove a part that wasn't necessary and all would be good. They could have easily upsold me to a full window replacement, but really were pushing to just do the simple repair.
I also asked them about caulking between our windows/stucco since we have had a bit of water leakage during big storms. They took the time to explain to me that this probably wouldn't help at all with the water leak -- and gave me a few recommendations on things I could look into on my own (ie culprit is probably where the deck is meeting the house). Once again, they could have easily said "sure, caulking is probably the issue" and upsold me to caullk everything -- but they were honest in their assessment.
I totally appreciated their absolute honesty through the entire engagement, and would highly recommend them to anyone.