I'm a Russian aficionado!
I tried big k75-10 PIO and they are better than stock caps and MGBO ones, then I also try a mixed solution bypassing them with a 0.22uf K72 ones (teflon caps).
With bypass caps I experience more detail and dynamic, but I prefer them in my phono stage, letting my quickie smoothing a bit.
As said before it's a matter of taste...I learned that in hifi you have to understand technical basis first (frequency response, harmonic distorsion, PRAT ecc...) and then it's up to your taste.
Like a good sommelier, you can dislike a glass of Amarone, nonetheless you must know it's one of the best wine in the world!