I want build a cheap HTPC so I looked up i7 prices on NewEgg today. 8700K = $349, 7700k = $309, 6700k = $359... I expected the gen 6 and 7 CPUs to be cheaper, but they don't appear to be. WTF???
The 8700k was more than that around christmas due to shortages upon release. I still went for it though. The 6 and 7700k is still a super solid choice for OC and gaming, so that's probably why they're still able to wax people. That and supply still being relatively low.
A htpc utilizes mainly the graphics card for video rendering. I use jriver to upscale 1080p to 4k which uses high quality madVR video rendering. Much better than any 'in tv/blu ray player' upscaling.