I was most satisfied with the quality of workmanship, especially where they wrapped the surrounding wood in aluminum. The skill level was beyond anything I could've imagined. The work that Mr.Kim could do was over the top, excellent. Everybody just did their job, they were not needing direction, they were all very seasoned in their craft and workmanship. I highly recommend Windows on Washington, it's a better job than you could even imagine. Exceeds expectations, it is really excellent work.