The reeds are more stable and durable. The regular D harp is one of the most problematic of harps. The reeds break more easily then on the long slot harps. I just ordered one from the Filisko guild this past weekend.
Sincerely, Barbeque Bob Maglinte Boston, MA http://www.barbequebob.com MP3's: http://music.mp3lizard.com/barbequebob/