I'm using MC15 trial right now and it looks good so far for dream HTPC setup. However, I have few troublesome issues that prevent me from purchasing it right now related to touch screen. I'm using Acer T230H and T231H for touch screen monitors and what I found was it hits wrong items too often. Let me explain in technical terms below.
1. Imagine I'm opening Audio section (default focus is Artist). When I tap on some cover with very fast speed, it leaves no trace for mouse positioning and just launch click event. The problem is focus doesn't shift from Artist to that cover and I got wrong ones. It also happens when your current focus is on different cover, song, genre, etc. It's really annoying.
2. What I assume is Theater view changes current item on focus with mouse move or directional keyboard event. In touch screen mode, it just click without movement so no focus change and cause wrong tap.
3. Tap and hold on screen for little while helps a lot but it's still annoying.
4. When I set this to run on startup with Theater view, it has mouse cursor for a few seconds before changing to touch mode. It works perfectly fine during mouse mode so I guess I wasn't wrong about this after all.
I hope there'll be fix coming for this soon so I can buy it at ease. For now I'll be sticking on my Mac Mini with iTunes for time being.
P.S. I tested on both stable build 80 and latest build 87.