Hands down the best upgrade I've made on my super duty was upgrading from Sync 2 to Sync 3. I bought mine through Stance Tuning USA on amazon. $799. As before mentioned, they take your vin and program the new system to work with your vehicle. Works flawlessly and it is leaps and bounds better than sync 2. I too prefer navigation from my phone over the sync nav, but it has come in handy in some remote places where my phone loses its signal. Surprising, the updated sync 3 actually had some of the back country roads I was on. Do yourself a favor and use forscan to make some tweaks to the sync 3 unit as well. I, for one, removed satellite radio from my input options because I never use it. There are other tweaks you can make as well. Definitely a worth while investment.