Originally Posted by
mcjimbosandwich
i was looking at the 705 on newegg but realized that i needed to spend another $70 on a street map of the lower 49 states for a grand total of $420.
with a $180 electropack, this leaves me $240 to spend for the GPS & mount, which i think i can easily do with $150.
I think whether this make sense depends on price sensitive you are. As the numbers are adding up, it looks like your approach will save you around $120. ($420 for the 705 vs $180 for the electropak, and $120 give or take for a GPS, and a mount).
If you went with the 705 for that $120, you'll get a better interface for your powertap than the basic PT head unit, a GPS that is designed for bike use, and avoid the clutter of 2 units.
The question is whether that's worth $120 to you.