[pct-l] Solar chargers or Battery transfer device?

[Rick Wiggins]

I am having a hard time deciding between a solar charger like the Solio Rocsta 
or the PowerMonkey Explorer.  The other option is the Igo AA battery transfer 
device I have.  Obviously the light option!   They all would charge my Droid X. 
I am concerned about the amount of batteries I would need for the Igo over the 
whole trail.  The Droid X is the only device I would need to charge though!   

Any thought on this would be appreciated

MeanderMoose