man, I've been looking for months at these things. I finally just went with the NOCO GB40, got it from amazon for about $80 and $15 more for the hard case and it actually came yesterday. I figured out of the 4000 people that rated it, 75% gave it a 5 star rating, so why not.. the one thing I don't like about it is it doesn't come with a wall charger. you can buy a usb wall plug in. I have an extra iphone one so i'm using that right now, it is getting a little warm (the iphone usb wall plug, not the jumper). I had 2 sears diehard ones in the past. bought one, it went bad, returned it, they gave me a new one and it went bad in a few months too. but both were junk and sears closed up around here so I have nowhere to return it too, that's why I went for the NOCO