Nothing really to say - it does what is says it will do, no muss - no fuss and no pesky advertisements either.

There is a little blurb that tells you that "it's working" when rendering higher resolutions, a nice touch instead of just sitting there brain-dead with you wondering what happened.

I appreciate the fact that it lets me download audio only for music videos.

I can't speak about support, I've never needed it as "it just works".

Correction:
The "support" is excellent as there are frequent fixes for problems ***BEFORE*** they become problems.

I think the "Buy me a coffee" is a small price to pay - pay what you can afford, it's all good! - and it let's the dev's know that the user's have their backs.