$50 makes a difference to me. Some people, including me, would rather have a device that does not have an interface that some other company has laid on top of the GUI that Google creates.The lack of an SD card does not cripple a device, from my perspective. Believe it or not, some people have no desire to take pictures with a 7 inch tablet.
I am sure you have a wonderful job that gives you amazing insight into the future of technology. I wish you well and much happiness with whatever device you decide to buy in the future.
I do wonder why you bought a Vox. Didn't your knowledge of the industry suggest another choice might be superior to it back then?