I imagine death by any sort of dinosaur is to be avoided. But I can't help thinking some dino-death scenario's would be worse than others. In Michael Crichton's book, Jurassic Park, the author depicts a scene (off camera, in movie) of small cat-sized carnivorous dinosaurs overpowering and devouring a human. This has stuck with me as perhaps the least preferred death by dinosaur. After all, you'd still be alive as the sheer numbers slowly suffocated you and ate you alive.
(My apologies to all true paleo artists out there who can probably see enough discrepancies in my bone structure and anatomy to set their teeth on edge.)