My husband and I are about to buy a Hova-Bator and start hatching our own eggs. We think this will be fun for us and my young daughter. I have decided on the Hova-Bator because I can buy it locally and I have read good reviews of it. My question is--does the more expensive model with the fan really make a difference as far as egg hatching rates or anything else? We can't decide between the cheaper one, which is supposed to have even heating, or the more expensive with the fan. I am inexperienced at this, so thought you guys might could offer your advice/opinions. If it makes a big difference, it's worth the extra money. Thank you!