LuMi aka penguin power
Which one is better, assuming that the artist's handwriting is legible. I'm not just talking webcomics, but mainstream printed comics too, which one of the two would you as a reader prefer?
I personally like hand-lettered comics, but the majority of artists can't handletter well at all. If you are going to handletter, buy and learn how to use and Aimes Lettering Guide. It's awesome.
Type is obviously fast and easier to read. I suggest making a digital text of your handwriting. It's not too hard to do, I believe there are tutorials online about it.
All in all what matters is that the lettering is neat, legible, and does not detract in any way from the art or panel construction.