I've enjoyed the reprints and have been happy with the reproduction.  I prefer the non-glossy paper stock as well.  I prefer this over the D&Q Stanley books with the faux yellowed paper.  As with their books, I wish you would reprint more covers though.

Otherwise, what I like best is the subject matter and that you're reprinting a lot of stuff that wouldn't otherwise be covered.  There's a lot of other great stuff from Dell that could be reprinted:  the Pogo comics (not sure if Fantagraphics has the license for them), the Terry Toons or Walter Lantz material, Mother Goose and Fairy Tale Parades from Four Colors and so forth.