The Brother MFC-990CW is a speedy, fully capable all-in-one device that earns our recommendation for an individual or a family that will make use of its touch screen and telephone/answering machine. Mechanical issues notwithstanding, this is the highest-scoring Brother printer we've tested to date.
The Brother MFC-490CW is an improvement over the more expensive MFC-5890CN, but that still doesn't excuse its drudging print speeds and mechanical issues under the hood. Instead of dealing with these headaches, we recommend you look toward the Canon Pixma MX330, which will give you consistent performance and a variety of extra features for the same price.
The Brother MFC-685CW inkjet multifunction printer offers tons of great features at the expense of print speed and quality. If speed and quality are your priorities, look elsewhere.