The Extreme Q and XQ2 are great choices for anyone looking for a mid range desktop vaporizer.
Every feature you could want - digital temp control, whip and balloon, fan speed control, remote, solid design, very reliable, good vapor.
If you are looking for a home unit and want better / bigger vapor, the Extreme Q and XQ2 are the way to go.
Why get the XQ2 over the Extreme Q?
Better bag system, better unit, more features. Basically, if you have the money to spend, get the XQ2. If you are on a tighter budget, you will still be very happy with the Extreme Q.