In 1982 I began purchasing equipment from Calumet Bensenville. They were a mail order facility then, phone calls only. I got good, knowledgeable service. After five years I began purchasing equipment from a local vendor who provided service to my strobes and LF lenses, all of which I'd bought at Calumet Bensenville. Fast forward to my purchase of an Epson 9600 with ImagePrint and rolls of paper and they didn't know anything about the products other than price. They couldn't even track the order for me (the Epson printers manifested from another distributor). It was the last time I've ever purchased anything of significant cost from them.
Conversely, when I work in San Diego I'll rent from the Calumet in Escondido. I find the counter service is helpful and friendly. The rental department is on the ball, too, able to reserve lighting and grip for me weeks in advance of my arrival, with everything clean, fully functional, charged and ready to go.