I have a double din Pioneer unit and I love it! Mine is the AVH 3700bhs or something close to that. The GPS is an add on, some of their other head units have it pre installed. I relocated the hvac controls to the bottom to give a better viewing angle and reach of the screen.
I use a single DIN Kenwood unit with a 7" pop out screen for entertainment and NAV. Within the next few days I should have a lesser priced Power Acoustics pop out screen unit with NAV in service on another vehicle as a test bed/experiment.
[This message has been edited by hnthomps (edited 11-23-2017).]