Quality in regards to printing photos is not important at all. I mainly want to print stuff out to read during travel at a later date. As long as it prints out the text with good quality, which I guess they all do, I just want it to be fast.
I did some looking up on my current OLD printer and it prints at 3.5 ppm. I've seen some printers for under a hundred that print up to 19 ppm.
Another related question: Any benefit to having a printer that connects with a USB?