Have used spectro gold - dries that clear that after a run think "Should put more on"

Castrol chain lube - good for coating your tyre.

Use valvoline 80/90 gear oil - helps take up the thumper chain slap nicely - got the tip to use gear oil straight out of the honda manual "Fancy that - people that make the bike actually know what to use" - and by far the cheapest. A little often !