As far as dressage girths go, I cannot recommend anything more highly than the Barefoot leather girth with elastic overlay.
It is padded, shaped and lovely!!!
Tobes is VERY picky about girths. I changed to a treed saddle and have him in an elevator padded girth with elastic ends on BOTH sides.
I personally like elastic ended girths and so does Tobes. You don't have to girth them up uber tight, they move with the horse. Personally, if I wasn't vain, I would rather have an elastic belt than a non stretch belt - you could move better with it!
I did have a Professionals Choice girth which is widely recommended. However, Tobes HATED it with a passion!
Leather is lovely Nat, and cleaning it will be good for your soul!