I've been looking at this device for a couple years and just couldn't push myself to absorb the cost. I happened across a couple blogs related to another issue and they recommended an agitator. I went for it and am very glad I did. The device really cuts down on heating time and throughout the cook, keeps temps stable. Very pleased with the purchase. I also want to recognize Peter for his outstanding customer service and being there with any questions (had a few!) I had. Peter, your help and attention to my needs is very appreciated and one of the reasons why Oak Stills is at the top of my list for suppliers. Thank you, thank you, thank you!