When I built my garage a couple of years ago I grossly underestimated the number of outlets I would want so my plan is to swap a couple of single outlet boxes with doubles. I was looking at the outlets that have a single plug but two USB outs in them, I could use this to keep the iPod of cell phone ( mine has a radio tuner in it that I use in the garage) charged up. Anyone have any thought/experience with these? I know when they came out there were some questions about quality and output.