OK, I am going to try this again at home. I just did a real quick check in the parking lot here at work
Using GPSLogger on my 8330, using the built-in GPS I am seeing a reported position error of 65' lat, 39' long. It sees 7 satellites. I let it settle for a few minutes before noting the readings.
The Garmin eTrex Venture HC is reporting a position error after settling for 5 minutes of 20'. I have seen it as small as 6'. It sees 12 satellites.
I switched to the bluetooth Garmin GPS 10X on the BB 8330, again using GPSLogger. It reports a position error of 2'! Whoa! It also sees 12 satellites.
All the instruments were in the same position under and open sky. No trees, buildings or anything to interfere with GPS. It is a clear calm day here in northern Ohio