Ladies and gentlemen, I can't make up my mind between the two main models of paper cutters, which I would primarily use to cut heavy weight photographic paper in the darkroom. I definitely had in mind to go for the Guillotin-knife style, because we have one at the office and it is very fast, extremely solid and reliable. However, the shop owner insisted that the rotating-blade types are more accurate and easy to use. However, the models he has shown to me looked made with tin and chinese plastic, with a itty-bitty guide bar and an awful work table. More a toy than a dependable tool. Which one do you use, and are there actually any good reasons to prefer a rotating blade unit over a traditional guillotin model? Thank you and good evening.