The bottom line with any cable is it has to meet spec. Proper termination is key with any interconnect style cable.
Speaker cable needs to be the correct gauge and less then maximum length to perform it's job. Using high quality copper or Silver is also a very good idea.
Once you achieve the spec and use high quality material there is nothing more higher end cables can do for your system. Discounting companies like Audioquest I also don't agree with. They build very nice cables that have excellent top notch built quality. But for performance reasons going up and up their line I have found no performance benefits. You will gain eye candy and if thats important to you then by all means buy the ones you like the most.
Most people get all caught up in price, price has no meaning to everyone from the sense we all have different depth pockets. Some will say your wasting your money buying high end cables. From a purely performance standpoint they have a really good point. But from a eye candy and make you feel good standpoint then they are not a waste of money. Again price has no meaning here as we all have different values and depths to our pockets.
I never frown on people from using high end cables or buying the correct performance cables for their systems. I do frown on cables that fail , poorly terminated or say they can perform the job and can't.
If you really like the Audioquest Type 4 speaker cables and they are the correct gauge and length for your system then I say get them. They are very nice have very nice quality banana jacks and dress up is very attractive to look at. They will not under perform in your system.
