I recently bought this all-in-one machine because I needed a good piece of equipment for my office. I also wanted something that would be fast & reliable and this certainly fits the bill.
The copier function works great. Copies are spit out pretty quickly (about 15 pages per minute) and the quality is good. It is a laser copier so the copies come out very clear, not all smudged like other printers I've had.
The fax also works great and is super fast. It has 8 MB of memory so it holds a lot of fax pages in memory. I love being able to program numbers that I use most often into the speed dial. It makes faxing so much easier.
Paper capacity is good. It holds 260 sheets of paper, so I am not constantly having to refill the paper drawer.