Has anyone compared Lumin the U1 Mini to the U2 Mini?

My take away is that the U-2 mini is a natural progression with some updates over the U-1 mini, which I already own. I don't feel it is necessary to run out and replace mine with the newer one. But for someone who doesn't own either, the U-2 makes perfect sense. And I can attest that the original sounds darn good.

Jason have you done any comparisons of servers and if so please give examples.  
 

I think even I could answer that question…..

I had a Node 2i before the Lumin and I think the U-1 was a very nice improvement. Using both with an external DAC of course.

If you wouldn't mind sharing offline where you found one at that price, I'd appreciate it. My son has a Node and is interested in upgrading.