Pros are it's very cheap...
Cons are it's very low resolution, only 360 dpi I believe, so if you are doing anything outside of long term banners, you'll get no quality out of it.
If you're looking for something a little more high quality that's a good entry level price, take a look at the Mutoh ValueJet. Lots of users here (including me) can attest to the speed, quality, and AFFORDABILITY of printing using the VJ. Starts at $15k for a 48" unit, $22k for a 64" unit.