I’ve never had any problems with a Garmin loosing signal and I’ve had an old Street Pilot and the color Street Pilot. I presently have a Garmin Quest in the truck but that is the one you have to download to from a CD. 1.4 megs I believe.
I just ordered a Magellan Maestro 4040 from Buydig.com for $309.00 two hours ago. That goes in the truck and the Quest will go in the car the wife drives.
Never had a Magellan before. (Fingers crossed!)