I really liked the idea of what they did with the start menu of win8. Whenever I opened the start menu, my intent was to focus on look for something in the start menu, not multitask, so live tiles were perfect. IIRC I even wrote a couple of toy apps with those tiles. Win8.1(blue?) was much more polished experience though, original 8 had a lot of rough edges.

I had an original Lenovo yoga and boy the desktop touch experience was bad. Hardware wise it wasn't winning any prizes either. The cooler died a couple of times and replacements were a pain to procure.