For anyone considering the new omen 15, I have the I7, 1060, 256GB SSD/1tb spinner model Microcenter has been selling for 999. The SSD in mine performs considerably better than this one. Having spent some time researching available options, for the very high performance in such a compact unit I am happy with the noise level generated. I do agree the panel is the worst part of the laptop, as it's just so mediocre. The 144mhz g-sync panel has been tested elsewhere and is much nicer, so for anyone planning on ordering one from HP, I'd definitely recommend paying for the better screen.
Otherwise I'm very happy with it. Comparing size, performance, build quality, battery, storage options, port selection, etc. it was a steal at 999 compared to what you can get anywhere else.
Never bothered to look up the service manual, but I replaced the 1TB hard disk with a 2.5 SSD, and didn't have to go through anything special to get it open. Just remove the screws and a little pressure near the rear vents to pop the clips. Not hard at all.