If you want a laptop for DJ work, you need to find the software you want to use first then get the OS that it runs on.
I've used Macs and Windows, and always find myself going back to Windows, Macs appear to be so overpriced for what they do
My new Windows laptop gets me up and running at the desktop in under 6 seconds, so they are not all slow and clunky (love my SSD
)
If you are set on getting a Mac, isn't there talk on new hardware coming out soon