Both, I used 2 channel in nearfield in my smaller second dedicated room ...Then with a top headphone and a good 2 channel system i dont feel any frustration...
But in my first dedicated greater room, i did not had any need for my Top headphone and it is the reason why i did not bother to optimize them then at the time...
A controlled acoustic room beat any headphone ( even in intimacy which is a fact ignored by most ) ...The only way to use a Top headphone on par with any two channel system it is probably to use a Bacch set of filters designed by Choueiri but with a Top headphone to begin with...
Anyway i am satisfied now and my hobby is no more audio because i learned what i intended to learn to optimize any system... And i dont focus obsessively on expanse for upgrade... Music accompany now my other hobby ...(A.I. investigation and maths)