I gave away my ZUMO 450 to my brother, but I cannot bring myself to drop $900 on Garmin's latest, overpriced motorcycle-specific navigation unit. So I am going to rig up my iPhone 5s using the 25 mm RAM ball on my Motorad MV riser plate, an extra-long 1" RAM arm, and X-grip and this power cord which I will/could connect to my FuzeBlock and snake up through the RAM mount with twist ties:
https://www.powerlet.com/product/battery-harness-to-apple-iphone-5-charging-cable/632
The Co-Pilot and Sygic apps look promising but so far, the Sygic app looks a bit quirkier to me.
Both apps will drain the iPhone battery pretty fast so the constant power source is key.
For waterproofing, I am guessing a RAM compatible AquaBox will do the job though it may not allow for a power supply cable while it is inside being dry.
Once paired with my SENA SMH10, the iPhone, enabled with these GPS maps living on the iPhone, can do almost anything the Garmin product can do. If there is anything the Garmin does that the iPhone does not or cannot do, it is very likely something I don't need or want.
Unless I am missing something, having the ZUMO 590 onboard seems like a needless expenditure of cash and a device that is, let's say, 90% redundant of the iPhone 5s functionality.
I don't need any more devices than necessary to distract my vision while riding.
Am I missing something?