I appreciate how its home page proudly calls out that it always verifies checksums. I've been boggled in the past how many tools skip that step. Sure, it slows things down, but when you're syncing between cloud storage options, you're probably in a situation where you really, really want to verify your checksums.
I thought the “indistinguishable from magic” testimonial at the top was a bit arrogant, but am currently trying to find out if these extraordinary claims have extraordinary evidence ;)