I've done fine with mine after my first attempt. The egg turner is worth it, but adds an extra degree or two of heat with the motor. I do not use a fan, but keep it in a cabinet, with little cd's under each corner to help the air flow. This helps keep the temperature more stable for me. You just have to keep a close eye on everything, versus having a model that does everything for you. I make sure both trays are filled with water, throughout the incubating, then add a sponge filled with water which you can easily rewet with a straw filled with water if you place it on the grid under the vent hole when you need more humidity for hatching. I always keep one vent hole open. If you keep a close eye on it and avoid 'tweaking' more than a smigeon at a time you'll be fine. I always remove the egg turner on day 18 and use the egg carton hatching method-- the incubating thread on here is really great, if you spend an hour reading, you will learn many helpful tips! It has really helped me.