Monoprice hasn't done me wrong yet! No 60Hz hum from running my Monoprice sub cable past my Amp wires and Power strip. And I didn't pay over $50 for it... Rather 8 for 25' run.
Research your cables... make certain you got good conductors, and good shielding. Then take the money you saved and get a nice bottle of Rye to sip as you sit back and listen to your tunes!
Or better yet, you realize you don't need to upgrade at all.