Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very safe, you'll never burn yourself

I bought one (thinking the removable pan was a nice idea), but returned it after only one use, thinking it was defective (cooking surface never heated much beyond boiling point of water). However the replacement worked just as bad (had to set controller to 400F just to simmer a pork steak). While other people complain about the non-stick coating coming off, this was never a problem as I could never get it up to a high enough temperature to remove coating. Safety improvement?