What do you use for lubricating your chain and why do you use that product (over the others available)?

I have been using White Lightning for the last few years. I liked it because it seemed to last longer than an oil-based lube (like Phil Oil).

The other day, I tried to clean it off and re-lube the chain. Normally, I would have used "Paint Thinner" or "Mineral Spirits" but California, in its infinite wisdom, has outlawed those products leaving us with nothing but acetone on the shelves at the hardware stores. Holy smoke!, that stuff is tenacious and resisted removal using acetone. A combination of soaking in gasoline (bummer!) and scrubbing each link with a tooth brush eventually got it off.

I allowed the chain to dry for a few hours and liberally applied Phil Oil.

On yesterday's ride, the drivetrain and shifting was noticeably different. It wasn't just the sound but also the feel - it felt looser, easier.