Recommended to me by someone from Sonic Electronix directly. I had another 4 gauge wiring kit in my cart, but the representative alerted me that it wasn't a "true" 4 gauge wire. He hooked me up with this for the same price and I'm loving it!
Provides enough power to everything, comes with tons of connectors and everything else you need for an install.

A huge pro I found with this wire is that it's very durable, but not super stiff like most wiring kits. The power and ground cables can be bent and formed to curves easily, which made my install SO MUCH EASIER!