Scott Nixon or CAL Alpha DAC

I am looking for a cheap dac for my Squeezebox. Both of these units are up for sale. Which one would you recommend?
i am sure both will be sold by the time you get all the replies cant do wrong with either one of them..just buy any of the two and if you dont like it,you can re-sell without losing any or very little of money..both will go very very quick on the used market..hope this help
I bought the Alpha. I have an older CAL Aria that still sounds great so I thought the Alpha. Like you say I can always resell if I don't like it.