It's a long thread so your going to sort through it, However, the issues of this driver in all in there.
I just picked up the U18. Ian and I had a quick listen to it in his showroom and now I have it and the power supply at home with me. I will be able to give it a try later this evening and tomorrow. I will try and get some pictures and impressions posted tonight or tomorrow.
I will be more specific later today (almost 4:00 am right now) but I can report that the U18 works great on both my Windows 7 laptops. 24/192, 24/96, 24/176, etc. Smooth play with no drop outs on Yulong D18 and Yulong D100MK II. More to follow.