What is the best printer to use for Giclée Prints?

There is no best printer. There are four color printers, 6, 8, and 12 color printers being used for art reproduction. I have seen absolutely beautiful prints made from a 4 color printer, and real garbage being printed with a 12 color printer. The greater number of colors allow the operator to get better color gradations, but if they start with a bad file all the colors in the world will not make a good print.