Are you positive that 220 isn't an option?
The one from pep boys looks nice. I could see the young folks liking the USB ports.
I have a Fat Max battery that I bought from Sams Club about 3 years ago and it has been pretty handy. It has built in jumper cables, an air compressor, small light, usb, and the lighter socket. Overall, on a scale of 1 to 10, I would give it a 6 or 7. As stated above, I do have to keep it charged..