In a vein similar to the best travel charger, I would be curious to know if anyone has any preferences when it comes to a portable USB power pack/battery to recharge other devices, such as phones, tablets, etc.

Do you have a specific model you really like? I have an Anker that has two USB ports and can be recharged with MicroUSB itself. I like that.

The WireCutter did a good write-up recently, but it looks like they are getting ready to update it yet again:

http://thewirecutter.com/reviews/best-usb-battery-pack/

I have a trip coming up soon and I want to be (overly) prepared in terms of power.