I purchased a cheaper unit just 9 months earlier. It was working fine until the lid would not stay secure. Turns out that the lid was held by two tiny 2mm protrusions which easily broke off.So I purchased this unit for a few bucks more. It works so much better, the opening is screwed on using a much sturdier method, similar to a nuts and bolt threading.
Rating: [5 of 5 Stars!]