The 8500 series has a wide range of prices which run anywhere from $299 to the top model at $499. All have fax, scanner and printing capabilities. The difference is in the extras. The lowest priced model has a cable running to the computers. The midrange model offers wireless technology, handy for multiple computers. And the final model not only has wireless hookup, but it also has both legal and standard paper trays. This is for the office that prints legal documents often.
These Officejet printers do not seem plagued with the paper jamming issues that were associated with the previous series, but they can not be perfect. According the HP website, there have been fax trouble occasionally with these machines and HP is working on providing help through online tech support.