Are any of the fragrant? I used to have phal den that was fragrant. Loved it.
Sonia is scented but you'd have to get right up close to the flowers.
My Emma White is also slightly scented.
Usually dendrobium hybrids with skinny sepals and petals (I guess ones with spatulata blood in them) are strongly scented. At least all of mine are, with the exception of Warawan.