I'm sorry if I duplicate some of what was already written, unfortunately I came into this thread a little late and don't have time to read every posting right now. However, I do plan to read them later.
I own a D-35, and love it. My appreciation for the instrument grew even more when I sent it to my luthier, who told me he thought Martin Guitars were generally over-rated. After doing the fret-work and a few other minor adjustments and repairs, he played it and could do nothing but rave about it.
Those who think it is too boomy, should look to a guitar that is not made for the traditional folk sound, like the Taylor guitar. Also, experiment with different strings, you might change your mind.
Tom TomLori HTTP://www.TomLori.Com