I had my basement carpeted in spring of 2015. I met Adrien at the show room who gave me lots of great options within my budget for both the carpet and the underpad. He then came out personally to my house to measure and provide a quote for free. I finally pulled the trigger a month later. The installer did the job pretty quick (1 day to prep, another to lay carpet). I was very satisfied with how good of a job the installer did in the rooms and on the stairs.
For the price, I think I got a pretty good deal. My advice is to consider upgrading your underpad as it really adds a lot of softness to the overall feel of the carpet for not a lot of money. It's been two years and the carpet (Opus II, scenic grey) is still holding up very well. Consider me a satisfied customer!