This is a discussion on PDA Net v. 3G Mobile Hotspot within the Droid X Apps forums, part of the Droid X Extras category; PDANet - 2 tests 3G Hotspot - 2 tests Both all the tests where done back to back, PDANet first, then I disconnected and started ...
i've always thought that having a direct connection is faster...but i have both pda net and wifi tether and they seem about the same usually
DROIDX...Droid Incredible...HTC EVO...iPhone 3GS...Motorola Droid...Mytouch 3G...G1
Although my phone is in a different location in the house, and has a little better signal.
From my experience, wired connections tend to be faster and more stable. But of course the convenience of wireless is pretty nice.