I purchased this Delta Faucet after extensive research on quality, price, functionality, and customer service. After 3 weeks of use, it is an awesome product. Unfortunately, I did have to contact customer service as the valve assembly was leaking and dripping on my counter. I submitted a help ticket to the company and without any further requirements, Delta mailed me a new valve assembly, I installed it and have not had another problem.  
Delta is a great company with excellent support!