I would have to say Blackberry is the best! I use Black Star an application that is free. No converting, just plug in your L&L and your set. Always puts me down to at least 3 feet most times it's right on. Does flip out when around a lot of concert or metal but not any worst then a normal GPSr. If you need any help learning how to use it, just hit me up I can help.
LOVE MY BB