I do not know about that one, nor do I own any HotMagnum products. I have 2 friends who do have the larger HotMagnum cannisters and I asked them yesterday what theythought of them. Both were positive - they enjoyed the filtration given by the filter and generally had no problems of any nature with them. Both did mention that it was a bit more difficult to open and clean than they had hoped, but neither was more than mildly frustrated at times with that.
In general, most cannisters are a bit annoying at times anyway, so I do not know what validation, if any, to give to this.....