This choice may not be shared by many, but I feel it a bit of a duty to say how White Lightning 'Self-Cleaning Wax' lubricant has transformed my cycling experience. It's a thin liquid lube, that dries to a wax coating, and actually 'sheds' any dirt that lands on it, so it stays totally clean and dry. Over months this wax coating builds up and improves. If you scrape it with your nail you can see that it is uncontaminated by any grime and the chain beneath is shiny. I honestly NEVER need to wash my drive-train and haven't for several years! All it needs is a quick wipe with a clean cloth, and then relube.
The secret to using this stuff is to thoroughly clean every trace of lube or degreaser off the chain before you first apply it, [even a new chain needs a meticulous soak.] but you'll probably never be washing your chain again, so it's worth it. Like I said, one of the benefits is how the wax builds up and penatrates over time. Also because it's uniquely dry and clean, it doesn't dirty your clothes etc.
The downside is that it's thin and not very durable, so needs applying generously every couple of rides or so [every ride in winter] and leaving to dry for a few hours before.
It's also pretty damn expensive @ £9 -240ml but that lasts me most of the year. -I'm really mean and hardly ever buy new parts, I repair bearings bushings etc rather than keep buying replacements, but this lube is SO worth it. My drive-chain is always clean, runs like clockwork and seems to be lasting far better. It is a remarkable product if used properly.
I am not in the trade