Kiwi, in my system I differ between those two combos
4x overslampling and SDLy_1 filter or
2x overslampling and FIR1 - I'm still braking this one and starting to like this one more and more.
Please remember that each of the combinations need to be broken separatley (300-500 hours on each combo)
But if you looking on a warmish sound, I don't think the esoteric is the best choice. The K series are neutural sounding and when properly broken present with dynamic, highly detailed but natural sound without any coloration an digital glare. I also prefer esoteric K series for their ability to serve as a great DAC.
4x overslampling and SDLy_1 filter or
2x overslampling and FIR1 - I'm still braking this one and starting to like this one more and more.
Please remember that each of the combinations need to be broken separatley (300-500 hours on each combo)
But if you looking on a warmish sound, I don't think the esoteric is the best choice. The K series are neutural sounding and when properly broken present with dynamic, highly detailed but natural sound without any coloration an digital glare. I also prefer esoteric K series for their ability to serve as a great DAC.