Most famous YouTubers use the Canon 7D which is way out of our budget haha.
The most cost efficient and still amazing Canon DSLR I can think of is the Canon T3i.
It is a DSLR with a flip out viewfinder which is great for vloggers to know if we are even in the shot and it has all your standard needs!
The best on the go camera I know about is canon powershot s110. Very portable and handy and awesome image quality. The Canon T21 or T31 are also less expensive than the 7d but have really great quality and same style.
I LOOOOOVED my Canon T2i! not ideal for video because it didn’t have a flippy-outy-screen (lol) but I just got a 70D which is GREAT for video with its new CMOS sensor and auto-focus abilities in video mode. the only thing it cant do is vlogging. It’s just too big and heavy. It’s also not a nice price for someone just starting out.
What others have said: The Canon 60D/600D/T2i/T3i are great. The 7D has even been used on films like Black Swan and the Avengers, particularly when they didn’t want to risk breaking the other mega-expensive cameras they used!
Don’t forget about the lens though – I find this is really what makes the difference. Try and get something with a wide aperture (something like 1.8-2.8 area). This will allow more light into the lens, meaning better filming in low-light situations and that professional shallow depth-of-field look.
Canon point & shoots are great these days too, like the IXUS series and S100. Much cheaper and easier to film with (at least I find, since I’m more likely to carry a pocket camera than lug around a DSLR when I’m out and about).