Canon XF300/305 and Sony XDCAM EX1/3

hello friends,
As tapes are being replaced by CF cards and other memory cards,and so there are variety of tapeless cameras available in market. Every model has its pros and cons.I am also looking for this format which saves a lot more time and saves one generation loss of footage.
I came across Canon XF300/305 and Sony XDCAM EX1/3 cameras.Both have some thing better than other. But what is that thing which makes any of the above model better than the best. Which of the above model is accepted in the industry....
Which has smooth workflow and accepted natively by NLEs....
I work on Premier Pro CS5

Puneet