I had a System76, and the thing ate battery. Had to sell it and go back to a mac because it wasn't usable.

I'm not surprised, I've never used a system76 laptop, but they always looked like chunky "portable workstations" rather than mobile computing devices. After dealing with the horrible battery life, weight, and fan noise of a Thinkpad with a discrete GPU and fast CPU, I decided that I would ignore that segment of the market in favor of the small and light category.