I is a huge fan of the Scottoiler system despite the initial outlay and the time that is needed to fit it and get it calibrated. Set and forget while reducing the time involved in chain cleaning and maintenance. There is a little bit of fling onto the rear rim, but it wipes off dead easy. And my chains last longer. I have tried waxes in the past but never seemed to get the frequency and amount of application right.
I have also heard from a reliable source that Q8 Oils make a marvelous and excellent value chain lube.