I will not deal with any other Diesel product provider. Customer service is by far the best I've ever dealt with for any purchase in life. Looked into my questions, provided answers with-in minutes, called back when they said they would with solutions and answers. Only had one issue for a lift pump being delayed (Airdog 2 4G 165GPH), no fault of HSP's and even credited my account for the inconvenience. The customer service alone won me over aside from the company manufacturing some of the best products on the market. Customer first company and I've already recommended them to my entire deisel friend community. HSP has won a customer over for life assuming they maintain the same qualities for customers already in place.