I think the best comments I ever got is these four (on the last page of one of my series).
The story I tell is something that is particularly sensitive, and getting the understanding and approval that I did a great job to convey it is very heartwarming though it is still in a draft form.
It makes me really happy (and ma-maybe a little teary??? XD ) to receive these comments, though on the previous previous pages, I also got some very nice comments from a lot of peoples too, so I'm grateful for that.