I used to use Mac but as much as I hate to admit it windows is far more advanced. You have no options with Mac and frankly it's made for ppl who just want things that work outta the box. Mac also uses 2nd rate hardware, and that's giving them more than they deserve.
I use my rig for everything, and I dabble in video editing. Unless you're a professional who gets paid for content creation, there's no reason to run quaddro. If you think Titan x price : performance is bad, the quaddro is even worse. I was running a single gtx 770 on air and renders for 5 min video @ 1080p hardly took any time at all. 980 I'm sure will be much faster.
I also agree about not skimping on quality. I buy Asus motherboards, and sometimes EVGA b/c even though they're not as experienced as Asus with mobos their customer service is king...I never have to fear an RMA if it comes to it.
EVGA is king of psu and gpu though.