I've used Finish Line Dry for decades. It's easy to apply: you can just sort of slop it on your chain, let it dry a bit and wipe off the excess. It's almost entirely solvent so it almost acts as a cleaner/degreaser. It does not attract dirt in my experience, it does well in dusty conditions. It's cheap and easy to get. The major downside is it doesn't last very long and is 100% worthless in wet conditions, but both of those traits are true of most dry lubes.