So far so good.
Printer: Easy to set up. Super fast print speed. (At least to someone who is accustomed to a ink jet printer.) The black and white rendering of color print and pictures is not grainy. From running through a roller and being heated the paper is no longer perfectly flat. It has a slight warp and wrinkle but this does not bother me. I would feel that it is perfectly acceptible for presentations as well as my own printing of recipes and recipts and the like.
Copier: Same as above for the quality etc. This is the first copier I have owned and so far I am very pleased.
Scanner: The scanner was a little finicky to set up. It seemed to do pretty well and be fairly reliable scanning at 300 dpi but if I bumped the resolution any higher (even to 400) it would stop scanning and lock up the machine. The only way to get it unlocked was to close it from the task manager and unplug and replug the USB cable. We went all the way through the troubleshooting section of the manual and nothing seemed to work. I had it connected by a very long USB cable (around 8 ft I believe) and my hubby suggested that sometimes there is data loss in extra-long cables and I try connecting it by a short 3ft cable. This seemed to solve all problems. I have now scanned over 100 images (I couldn't even scan one before) and it has caused me no problems, even scanning at 5000+ dpi. Also, I couldn't tell by the product description but you can scan as high as 9600 dpi.
Scanner software: It took a bit of work to figure out the software and it's little quirks. The main thing I want the scanner for is to scan cards, child artwork, and memorabilia for my digital scrapbooks. Therefore, the high-resolution scan was extremely important to me. The short story is that under the advanced tab of the scanning software, you can set your size and resolution. The problem is that there is no pre-defined parameter that emcompasses the entire scan plate. If you set it to "flexible" it will not scan at 9600dpi. Because of this I had to experiment by trial and error with the parameters. I discovered that 5000x6850 worked to just about take the entire plate (minus maybe 1/8") I'm sure I could fiddle with it more to get it completely exact but I am happy with this result.
Fax: I am choosing not to use the fax at this time.
Overall: I am pleased with this machine. Once I ironed out the kinks it works nicely and has not caused me any more problems. I would recommend it as long as you use a short connecting cable. I think that there was just so much information to send at the higher resolutions that the long cable couldn't handle it. (BTW I had used this same cable with my ink-jet printer and it worked fine so I know there wasn't a defect in the cable itself.)Get more detail about Canon imageCLASS MF3240 Monochrome Laser All-in-One Printer.