I don't have a bunch of experience with them, but I have produced Spotnoses and Pastel Spots, and will breed for Pastel Powerballs and Powerballs this coming year. I have seen quite a few of the Spotnose crosses in person, including Pinstripe Spots, Lesser Spots, Powerballs, Axanthic Spots, Calico Spots and Albino Spots.

I don't really think there are alot of Spotnose "experts" out there, but if I can't help you, the best 2 people to ask would be Tracy at VPI or Morton Wright.