I use a Dell X50v PDA with a CF GPS and Mapopolis mounted to the windshield with an Arkon powered PDA mount. It works like a champ, no problems what so ever. I do 360 virtual tour photography and am driving to new locations every day. I won't leave home without it. I also play audio books on the pda at the same time and listen to them thru my FM using a Belkin iPod fm Tranmitter. Again, no problems.