I returned my Nexus 7 due to Bluetooth pairing issues with the Garmin GDL-39. The iPad mini I replaced it with ran great right out of the box and has ever since.
Other than the bluetooth problem, I had no problem with the Nexus.
Nick "Hairball" Knobil
RV8 N80549 (First Flight 2003)
Aerosport O-360A1A, Dual LS CDIs, WW200C