Shot a T-300 1/2" above the shelf & vanes for quite awhile, primarily as vanes are way less expensive and far more durable than feathers.
I recently went back to a simple rug rest on the shelf, with either a leather or rug strike plate, and feathers.
Both shoot well, but off the shelf & feathers gives me better flight and seems more accurate.
Who knows, if I go broke buying feathers and get sick of re-fletching every time I take my bow out (pretty much every day when it's decent outside)I may go back...