Yesterday i got my LEA-6 GPS module and made a short comparison.
I Placed my Copter outside on the street and wait 2-3 mins to get a good GPS Signal and then I running a track on the street with my copter over my head. First with Mediatek and after with the new LEA-6.
Surprise! the LEA-6 are mutch better! I Got the GPS Fix under 30sec, got GPS in my House... and the now the Loiter works mutch better!