The touch to start the recording, works great! And as far as the quality - it's decent. I can clearly hear the professor, but I can also hear my finger pecking the glass as well as a couple kids who were sitting next to me talking every few minutes. So the mic pics up everything. But I wasn't sitting front center each time. I was off to the side a bit in both classes. But I can defeintly use it to effectively study.
The only thing I wish it had was the ability to draw charts or someway to take notes in a math class. But for a normal lecture it works great.