Buy from a reputable breeder. They use good stock and price babies according to appearance with lots of experience picking winners. Buy the most expensive one you can afford and you will have one of the nicest animals from the clutch. Buying from unknown lines as the animals gets older it will dull and get black freckles everywhere. The quality yellow is noticeably less. Plus the main breeders will offer you with all the support you need. Buying from joe jack down at the show who'll you'll never talk to again is probably a bad idea with the first of a new species to you.