Ranked in these QuestionsQuestion Ranking
Pro Built-in Wifi
The Udoo has a built-in Wifi module. There's no need to buy a separate Wifi card.
Pro Arduino hybrid
The Udoo has a separate ARM Cortex-M3 CPU which is the same found on the Arduino Due in addition to its other ARM i.MX6 Freescale CPU which runs either Linux or Android. Making the Udoo perfect for hybrid projects that need both Linux and Arduino capabilities.
Pro Pretty user-friendly
Even though it is quite powerful and may seem a little scary at first, the Udoo is actually really user-friendly. After hooking it up with a monitor, keyboard and mouse, it's already configured with either Ubuntu or Android and you don't need to do anything more in order to use it as a simple PC for day-to-day use.
Con Official images are not full distributions
Both Android and Ubuntu images lack some useful software which would be installed out-of-the-box for most Android or Linux devices. For example in Android it lacks the Play Store app and other Google apps. These can of course be installed but need to be done so manually (at least the Play Store) by flashing them from the SD card.