Thats even not true anymore especially for US dj's Tenaglia, for example said he uses %50 cd's in his sets. The vinyl is mainly a symbol of djing, people like to see the two turntables and the records spinning (including myself) but times are changing with the technology. I personally mix it up with both, but if i had to choose I'd keep my cd's cause with the new 9000's with the 5 seperate cue's loops etc justs brings your capabilities to another level..