Earlier today I decided to upload a video to YouTube as a test to see how it would compare with Vimeo. I've been using Vimeo because back in the day YouTube was very limiting on the size of videos that could be uploaded. However, the more I use and view videos, especially my own when checking to make sure they came out like I wanted, I've been running into some issues with Vimeo.
From a user standpoint, when viewing videos on Vimeo, you really only have two choices - HD on or HD off. With YouTube, there are numerous choices for resolution, both HD and non-HD, depending on the source video. As I have discovered though, when viewed on my tablet (a Samsung Galaxy Tab 10.1), the YouTube app only provides choices of HD on or HD off. Vimeo on the other hand, does not even give you a choice. The other thing I've noticed is that Vimeo seems to be more apt to buffering issues.