Hi. This is a common question. You should be able to find a wealth of opinions if you do a search here on the forum.
The short of it is - acoustically, I don't believe that you'll notice a difference. You might notice a difference in how easy it is to work with either cable (due to connector tightness, cable stiffness, how the outer sheath feels, and so on).
There are many, many options out there for RCA cables. If aesthetics isn't a big concern, then you shouldn't need to spend more than $10 on a 6-foot cable. Monoprice has some
good ones for about $4 (before shipping). If you like the Acoustic Research PR171, go for it - they look to be about $7 online.