YOu will get different opinions from everyone, I particularly LOVE my Hova bator, and yet it's styrofoam, Little giants have good reviews as well. The best one in the world in my opinion is making your own, why because you know all about it, you know how to fix it when something goes wrong and you can make more then one for a back up. You can also immediately replace parts if something quits on you etc.
but again that's just my opinion. All bators are going to have there issues, it's all going to depend on the time, you want to take to make sure everything goes smooth..