Does anyone have experience with this device? I am considering giving up my AT&T high speed internet (via the phone line, though wireless through router) for this device. I want to be able to travel with my laptop and still get internet. Right now I pay for a broadband "card" attaching to USB port, and the AT&T account. It would be cheaper for me to have the hotspot but how is the performance for downloading, photos, etc. I have multiple computers at home that work of the wireless, so I would need to be able to have a similar thing with the Hotspot. thanks for any info from users