Reply to Buying new Laptop.. So confused don't know what to do.

I've ran a ASUS PC & TSP2 for around 2 years now. I'm running a traktor Z2 as my primary soundcard although I have an A6 & A10. I'll be using the new laptop for DJing & production only. TSP2, Maschine & Ableton

I currently have 3tb of music on 4 different hard drives all HD's are PC formatted.

If I buy a PC do I get Windows 8 or Windows 7 ultimate? Then there is the USB 3 issue?

If I was to buy a mac this is the only one I could afford. I need 15 inch because I run 4 decks sometimes.
http://store.apple.com/us/product/FD...-core-intel-i7

For the same price check out the specs of this ASUS
http://www.newegg.com/Product/Produc...FZRj7Aodh2MAHg

Has anyone recently bought a new PC & have any thoughts or comments on their purchase? If I only spent 1k on a new PC I'd be really happy. Just not sure what to do?

Sorry to post another MAC/PC post...

thanks
jeff