Slendy is like a chain letter that kills you anyway out of spite. The Rake just kills you. It would be my civic duty to help contain mean old Slendy.
Given that I'm pooched anyway, I'd go with the one that I can simply pull an SCP-173 on and have watched at all times.
Take about 60 guys, 20 working 8-hour shifts at a time, caffeine pills, and painkillers, and Slendy can be contained indefinitely. Keep a few to ward off his minions, and he's a non-issue.