I was thinking about getting a smart phone but because of Data plan and few other stuffI'm trying to get some nice android tablet under $150.OS = I don't really care. ( But has to work when I upgrade.... if I can't upgrade.... at least 2.1) , or 2.1 OSUSB port = At least 1 USB port..... if it doesn't then at least 1 micro usb portHeadphone = 3.5mmI don't really know about tablets so I think should just say Recommend me GREAT Tablet <$150.Thanks.