Although I'm a fan of older Audioquest cables in general, I'd stay away from the Midnite series. Not sure which version I had but on my set the insulation inside the cable had deteriorated to the point where the conductors were exposed. This is potentially dangerous for the amp. I believe I read this was a common occurrence with the Midnite.
No experience with the Indigo. I will say my favorite Audioquest speaker cable is the Crystal. These also come in various versions and I have owned a few of them. They can go for pretty reasonable prices on ebay if sellers expectations aren't too high.
No experience with the Indigo. I will say my favorite Audioquest speaker cable is the Crystal. These also come in various versions and I have owned a few of them. They can go for pretty reasonable prices on ebay if sellers expectations aren't too high.