Look - this how it works. They're both brilliant guitars. the D35 is a bit bassier, but the HD is fabulous also - you can feel the sound waves of the HD tickle your tum - its so alive.

The noise emmitted depends on who's playing them.

However if you buy a Martin - bear in mind it comes from a factory. The holes that the pegs go into have been made by machines. The nut may not have the correct width grooves for the strings you wish to play. Get the holes and the nut right and it will stay in tune.

So get your guitar and then hie thee hence to a luthier who will set it up - put a strap button on for you, on the heel, as well.

The materials Martin use are first class. You should be fine, which ever way you jump.