Here's my 2 cents...and I know there are plenty that will disagree...
I'm an electrical engineer, and some (I did not say all) of the hocus pocus that people talk about with cables is complete junk. It is true that some cables are physically better than others, and there certainly is junk out there that I wouldn't waste money on. That said, I would recommend using a cable that is built well and reasonably priced. I used Mogami cable on my board and GLS Audio plugs. They are both reasonably priced, especially when compared to something like George L or Lava. Don't listen to a manufacturer that tries to tell you that your going to have better tone when using their plugs vs another. Unless it's some extreme case, electrically it's just not true. They can provide all of the garbage advertising they want, but all they are doing is playing into the majority of people who don't understand electricity on a high level. All the signal from your guitar to your amp is, is electricity. Ohms law and proven laws of physics apply...no cable can change that. Blind tests that have been done by many people over the years PROVE that people can't hear the difference in most cases. One particular one I remember was one where they had people blindly listen to 2 amplifier setups. In one, they used a Monster cable to hook up the speaker from the amp...in the other they used a coathanger...and people couldn't tell the difference. Yes, I'm serious.
Again, I'm not saying buy cheap junk from China that will fall apart. I'm saying pick a sturdy built cable and plugs and don't worry about the name on it. I'd pay more attention to a nice thick cable from my guitar to board and board to amp since those will be moving all the time and walked on top of. I just hate to see guys spend hundreds of dollars on wire and plugs that they think is helping. The truth is, once they buy all that stuff and wire it up, they SAY they can hear a difference because they WANT to hear a difference. If my wallet was crying after being abused like that...I'd want to hear a difference too.
I believe in spending money on things that literally do more than the competition...hence why I have a PBC, one of the most expensive loopers in the world. I have it because it actually has features others don't, it has great customer service (Ron) and nothing else compares. Where something else compares, use money wisely!
Bottom line, use good common sense, buy reasonable, and have fun. That's what it's all about. Just my 2 cents...take it for what it's worth....