Was looking at some Anker charging hubs, but wanted to make sure I'm shopping for the right accessory. My N7'12 has become *very* slow to charge without any changes in the adapters or the cables I use, so it's sensitive to power issues. Amazon has a big selection at Amazon.com: anker usb: Electronics Was wondering if any of you had firsthand experience with one that works well with the N7'12. We also have a N7'13 and a couple Android phones that we regularly charge. I'm not sure which combination of amps/sockets would be the best. Thanks.