At our show friday there were two set-ups, mine and one
from another deejay, spinning later that night...
I used mixvibes (first time at a show) the other guy used
serato... he spent 10 minutes to get serato working properly,
i spent about 15 seconds

i had no problems at all,
it all worked very good, scratches and stuff with no noticeable latency
on a laptop with low specs.. while he had loads of latency with a
dualcore laptop... proves me that i bought the right thing..