What job is more challenging ..DJ .. VJ ... or RJ ?

I think all of them were challenging,depends on the situation :)

rj is more challenging cuz its ur voice,lang,style,music n fluency matters!...all types of people r hearin it so u should b careful while talkin...above all u ve the whole setups (system)wer u got 2 talk wit smile n control de system at de same time..wer as in vj u need only lang,bodylang n style!..dj needs good music, style n slang!..so rj is more challengin! thank u!

VJ is more challenging as u need some guts to face the camera, whereas for being a RJ u need only have to be fluent in ur language....

I think DJ is more challenging.

all 3 r equally challenging.. every job is equally tough in its own respect!!