Sorry I need help trying to decide if I should go with more expensive cables or cheaper ones. I am new to audio but bought an amp/dac that requires rca cables. I am wondering if I should buy more expensive versions of the following: 1) Rca cables 2) 1/8 to dual rca cables 3) And lastly a digital coaxial cable. (Does length matter for this one? Is 25ft. too long?) Please let me know as I’m newb to audio.