Garmin 48, GPSMap 76S, GPS 10x and Motorola Droid.
All machines placed in same place in window of a house with limited view of sky. Tests repeated several times. In general...
The 48 and 76S appear to have the same chip set and each displayed one satellite with low signal strength.
The 10x had 11 sats visible and used 4-6 with moderate signal strength. The 10x was using the Android GPS Bluetooth application which uses the NEMA data stream.
The Droid showed 10 sats visible used 7-10, and had about 30% more signal strength than the 10x. The status info for the Droid was displayed using the GPSTest application.
There is some reason to believe that the Droid is using the Motorola chip set:GPS IC GSCi-5000, the documentation can be gotten at:
http://www.motorola.com/staticfiles/Business/Products/M2M%20Wireless%20Modules/GPS%20Module/_Documents/_staticFiles/SiRF%20Documents.zip?localeId=33