Hey JoeN,
Awesome, I'd love to see some pics of your progress/work.
I saw those taylor edge ones and you can't complain about the price!
but what really sold me was the Kosbo.com ones also had a 5v power out so you can power the Arduino and Nixie tubes of one wall plug.
Mine is still going strong and I have added a Dallas D18B20 Temperature Sensor so it's displaying the temperature as well which is pretty cool.
One little glitch i've seen while bedding mine in is every now and then it doesn't fire a number and is just blank not to sure why.
Rob.