I bought this one a while back. It works very well at cooling the beans quickly and does a good job of pulling off the chaff too. It was probably about $20 less when I purchased it and it was a steal at that price. I'd say shop around. If you don't currently have a way of separating chaff, definitely go with a two tray design for that purpose. It saves a lot of work and mess.

I bought this one and have been very happy with it