I have one Brensea I use it as an ICU for chicks, otherwise its useless. I lost too many clutches of eggs in it. It is not consistent, and will not keep a decent RH, even a dry hatch stays at 23, with water it jumps to 70 then rapidly drops back to 23 with in 24 hrs forcing me to constantly open and add water. I refuse to by the attachment humidifier. So I use it to dry hatchlings, or keep weak chicks warm till they get on their feed.
Click on the link that follows, it takes you to this deal,it is good through Dec 2nd. it has auto egg turner, it costs 103$ including shipping, regulasr price 164 + shipping, i have been looking for quiet awhile and this is the best one for the $, that i have found. here is the link to the site,http://www.flemingoutdoors.com/professional-circulated-air-incubator-with-egg-turner---4200.html http://www.farmandfleet.com/catalog/image.aspx?i=714457
The remaining four incubators are homemade, they are made of large food grade sytofoam ice check (used by caterers/shippers) , a light fixture, computer fans, thermostat for hot water heaters, a glass jar for water, and a little giant cradle, wire nuts, and a power cord from old computer tower, extension cord, ect. Total cost using used items $0.00 cradle was $29.99 compared to the 100 to 160 . I might have spent. I keep spare parts on hand incase I have to throw an incubator together real quick. I can make one out of spare extra parts in less than 10 minutes now and never leave the house.
I don't think I will ever buy one unless its a high capacity cabinet style.