Oak, the general advice people have given here is on the money.
Any cable will do although the best conductive metals are often preferred so there is as little signal degradation as possible from source to speaker.
That means copper (or silver if you really want to buy expensive crap but that would be ridiculous).
Beyond that the only criteria for you buying cables should be price.
Reviews of cables are almost never done using a blind tested method, hence any perceived sound changes are due to the reviewers own brain expecting change.
There is plenty of info throughout these forums on both speaker cable and interconnects. The search button is a useful tool.
