Ok, here I am decided to purchase a gqf incubator and i need to make a decision. 1. Whats better than 1202 or the 1502, and what are the differences? 2. Whats better than 1502 or the 1500, and what are the differences? 3. Is it better to get the 1500 with a separate small hatcher, or stick to the 1502?