I tend to use Silkolene or Castrol, but only really cos they seem to be the most readily available. They all seem to do different ones (racing, Teflon, titanium, wax, lube etc etc etc til the cows come home), just confusing, but I reckon they all pretty much do the same job as well as each other. Got Silkolene "Titanium Dry Gel" at the mo, it goes on like a wax, which I don't really like cos it looks orrible, didn't realise it would look that way when I bought it - but, it is easy to see if you've applied it thoroughly. PJ1 used to do one that loads of people asked for specifically, don't know why or if it's still available.