As others have stated, this carafe is very thin and easy to break (please tell my why one of the reviewers gave it 4 stars and she's on her FIFTH carafe in 3 years and is ecstatic...); also, Cuisinart has you by the short hairs when it comes to replacement. As for its efficacy, unless you pour a VERY SLOW cup of coffee it's going to leave all over the place. I've never had another decent quality carafe that would leak as badly as this one. I've written customer service twice asking, "Why did you make a carafe that leaks?" and have yet to receive a response.So, -1 Star for thin glass, -.5 star for proprietary replacement, -1 for the leaking issue and another -.5 for no response as to "why did you make a carafe that leaks".