Brother likes to make equipment perfect for a small business owner or for home use. You don't want or need a 40 pound monstrosity which requires a table for itself and takes up an entire corner of your home office. You just want a unit that can cover the basic features that you need while staying generally out of the way. The 665CW definitely fits that description. This one package can cover your needs for printing, copying, scanning, and faxing without dominating your limited space. It can run prints and copies at up to 27 pages per minute black or 22 pages per minute color. And it easily connects to your PC and many digital cameras for quick print access.
However, the 665CW is also a discontinued printer. That means that Brother isn't going to keep producing toner cartridges for it forever, and you could end up stuck with a perfectly functional piece of gear that can't do the job for you anymore. Unless you decide to use ClickInks. They carry the full line of Brother toner for your 665CW printer, and they drop the price per unit the more that you buy, letting you stock up and save. They also sell re-manufactured ink cartridges that cost less and are guaranteed to get the job done the same as the official branded versions.