I have an Epson CX5200, which should be more or less similar to the 6600. It works pretty well (for printing/scanning/copying). The only problem I have with it is that it has a really loud paper loading noise. You shouldn't have much of a problem with the drivers - the original 5200 scanner drivers didn't work, but they released a (good) working update, so it looks like they care about the Mac side of things at least a bit.