Have any of you guys replaced the Elite 7 with a Garmin unit. I ask because I replaced a 550c with a Elite 7 and it is a piece of junk. I guess my question is, are the Garmin's in the $700.00 range better that the Elites? Particularly the GPS, my boat would out run the GPS while using the trolling motor. The fish finder on the Elite doesn't come close to what the 550C was.