Laptop buying advice

[warpnote]

Been lurking here for a while. Im a VJ with a background in motion graphics
for tv. Done visuals now for about 2-3 years. Currently running Arena on a mbp
Retina15", but lately looking to setup a high perfomance win laptop.
Doing arena/festival size work now, along with the usual club gigs.
Looking for stability and performance, mappings can be quite elaborate,
also experimenting with 50fps video. Timecode at the larger festivals,
loop based/audio reactive at the smaller venues & clubs.

Im sure this topic comes up several times a day, so feel free to
point me to any relevant thread. Need to buy this machine in a few
weeks as I am going on tour (tour already have both macs & win rigs,
but prefer to set up my own system. )

Any advice appreciated, thanks guys!!

[Oaktown]

This thread is a good place to start.