I am not saying to spend 10k, a pair of cables, but buy something cost relative to the rest of your system.
I would suggest that you make sure you can tell the difference before dropping more money on cables. The point of diminishing returns comes MUCH faster with cables and dramatic markup for R&D, advertising, and custom materials sometimes, is can be rather extreme. I wonder how many who blindly follow such a formula and the idea that "you get what you pay for" could actually tell the difference blindly between their cables of choice and a pair of Anti-Cables, for instance. I'm not saying cables don't make a difference, I believe they do. If you're willing to put a bit of time and effort into your decision you could use the Cable Company's lending library for the cost of shipping, or you could buy and sell used (though the latter in these times may be more risky). You will always find folks on both sides of your "great debate". I'd find out what side you're on by listening rather than by asking others. As far as suggestions for cables in that price range - I'd agree with many suggestions that have already been given here: Anti-cables, Signal Cable, Blue Jeans, Canare...I'd add to the mix used Harmonic Tech Truthlink at just over $100 for a meter. DH Labs also makes some nice cables in that price range on the used market.