Terry_42

I think they have a mapping for the MK2 on their forum, but it is not officially supported.

https://serato.com/downloads/files/139737/Pioneer+XDJ-1000+Quickstart+Guide.pdf

I heard them compared to similar offerings from HK and Behringer.
They are definitely above the entry/cheap Behringers and on the same level as other offerings from the mid-range variety (HK, Peavey, JBL,…).
Good thing is for a PA their response is relatively flat, which is excellent for DJing. I know some DJs prefer bass heavy, I am more of a flat response fan. Also the sub is excellent for its size, so if you EQ it bass heavy it gets enough OOMPH.

As always in this segment I would heavily compare prices and then make a decision suiting your needs.

Honestly the only Windows Laptops usable for DJing environment are Pro-Grade Laptops.
Like HP EliteBook Folio, HP zBook, some Dell Latitude or XPS, Higher End Lenovos etc.
Those cost about the same new as a MacBook, simply because they use many of the same components.

There is no Vodoo Magic or Apple ripping you off. Yes you might get a HP EliteBook 5-10% cheaper with same specs, but thats it and cheap 300-500 Euro PC Laptops are also only worth that money and will not last a day in a steamy under ventilated club hit by a 1500W lighting can.

https://www.musictheory.net
Not all is free, but very good.

I had no problems. Current OS X and current Serato.

You might run into problems with one of the following controllers:
Numark Mixdeck
Numark V7
Reloop Terminal Mix 2
Reloop Terminal Mix 4
Reloop Terminal Mix 8
Vestax Typhoon

Yes they are. Amazing but true.
However I predict it will only be this way for a short while. I can already see product quality with Apple sink regarding their mobile devices (iPads and iPhones) and if this hits the Macs, then these amazing times will be over.

Honestly I do not like Panasonic Toughbooks. They tend to overheat due to design when stressed extremely. They can survive a fall and all, but constant straining is a tough one.
DELL has a tough line that does that a little better.

As for DJing I do not think you need a toughbook, you can use a good laptop per se. I tried a HP Elitebook Folio 1040 and a 1020 Bang/Olufson Edition and both worked extremely well (and are good looking). However I had maxed stats (8GB Ram, i7, 512G SSD) so they were both above 1500 bucks.
Which as always: Quality costs money, no matter if Apple or not. (My MacBook Air was cheaper than the Folio 1020).