OT: Advise me - shoping for new laptop.

[Juan R. de Silva]

Hi folks,

My new laptop most likely will be Dell Precision M4800 Workstation. 
After looking through forums and googling I still need more input to make 
final decision (the damn thing IS expensive) on the components bellow.

Please, share with me your personal experiences and opinions: which is 
better supported, will will give me less grief from offset and in the 
foreseeable future?

Wireless card:
-------------

Intel® Dual Band Wireless-AC 7260
802.11ac/a/b/g/n 2x2 Half Mini Card
 vs.
Intel Centrino Ultimate-N 6300 802.11n 3x3 Half Mini Card
 vs.
Dell Wireless 1550 2X2 802.11ac + Bluetooth 4.0
 vs.
Dell Wireless 1601 2x2 802.11n+BT+60GHz (WiGig)

Graphic card (it's going to be 15.6" QHD+ (3200x1800) Panel):
------------------------------------------------------------

Nvidia® Quadro® K1100M w/2GB GDDR5
 vs.
NvidiaQuadro K2100Mw/2GB GDDR5

Thanks.