I'm looking at getting a headphone based set up for home
Well in that case Luke it is best to up your budget on the headphones, especially if your listening will be exclusively via headphones.
Personally, I wasn't impressed with the K92 model (despite its best-buy WHF review).
Ideally you'd get to try some options before settling because the differences in sound (and comfort) can be vast.
Don't read this as me saying that more expensive will always be better....though I would imagine the HE1 from Sennheiser isn't too shabby - £51,000 - but you do get an amp with it.
(I paid 335 times less for my HD-560S from Sennheiser Direct, £152 with a 10% first-order discount).
Start with some decent (low to medium impedance) headphones and see how you go.
You can always think about DAC / amps later.