I agree with sweetlittlejenny, the boy ponies as a whole are more sought after for customs, but are far pricier than their female counterparts. If you're just getting into customizing, I would suggest trying out your techniques for painting, sculpting etc... on a cheap pony, even like a dollar store fakie. I've purchased tons of baity and not so baity ponies on the arena, and the boys in my collection of baits (I only have 3 of them) have cost me about the same as getting 12-15 of my girls.