I requested quotes from several of the top rated roofing contractors in my area last March. The folks at Peak were the first to set up a time to come give me an estimate (on the following Saturday morning!). They gave me quotes for two different options on the materials, had a written quote to me within a week, and the price match if you get a better price (although I didn't).
Scheduling the job was easy and was done in a day. Most painless home improvement experience I've had so far.
Since then I've referred several friends and neighbors who ask about roofing since they know I just had mine done.