We run 2 of the 400 egg redwood incubators. Both are probably as old as I am, but are priceless. I put new wafers and a remote digital thermometer in them. They hold humidity and temp better than anything I've ever dealt with before. We hatch everything from chicken to pheasant, peafowl, quail, turkeys, ducks, and geese all in the same incubator.
I've never had luck with any of the styrofoam incubators. They simply are too variable in temp and humidity. You have to sit and babysit them for the most part. I would love one of the new Sportsman eventually.