my .02 is that the battery is a non-issue if used wisely. Sure, if you have the phone on with the brightness full blast and multiple apps going at once while sucking up data, it will be. But if the screen unit is used conservatively these batteries will last the length of the ride without issue. Keep a battery pack at the read and simply plug it in whenever you take extended stops. But in all honesty, unless you're riding for 8 hours straight without any breaks, you really shouldn't even have to. Just charge it when you get to your destination. My brigadier's battery is smaller than both of these units and I have run out of battery twice (my own fault) in 4-5 years of usage. The screen size of the XD for me is just too big but that's a personal preference. Since I rarely use the unit for navigating on road i like a smaller unit that wont bounce on the handlebars as much. I actually even prefer the old Brigadier over the Pro because of it. I've never had any issues with the Brigadier's lack of power (RAM) running multiple apps at once so I really doubt you'll have any issues with either of the newer units. To me, if you ride more on road and prefer the bigger screen, XD. If not, Pro.