TrustedReviews have looked at the Brother HL-4040CN
A quote from the article:
Brother HL-4040CN Review
There are definite good and bad points to the HL-4040CN. The reprint and direct print functions are things we've long looked for on business printers, as they are simple to implement and very helpful to the customer. On the other hand, its lack of expandability and only average print quality count against the machine. It should be on your shortlist, but only along with representatives of its major competitors.
Brother HL-4040CN Review