I was only planning on using them at my home PC, both gaming and music, not for listening to music out and about, so I wasn't worried about sound bleeding out, and I don't really need noise canceling, certainly wouldn't pay extra for it.
With that in mind, and in terms of comfort and sound quality/stage I figured that open backed would be preferable to closed for me.
At the moment £200 is the upper limit of what I'm willing to budget as it'll still be a massive improvement over my current headset, although would prefer to spend less obviously.
I've heard recommendations about getting a DAC/Amp for good headphones but would sort of prefer not to shell out more money if it doesn't really make much difference. Any thoughts on that front?