The Sullivan's Extend is the absolute best when you are working with glue. A buddy of mine uses the Andis aerosol stuff (Cool Lube or something) and I don't like the way that the blades shed the hair after I use that stuff. That is the biggest thing for me when I'm clipping with the Andis 2 speeds and blocking blade, whether it be an X-block or the Andis or an Oster or anything, I have better luck with the Extend keeping the blades from hairing up for a longer period of time, whereas, the Andis lube seems to make them hold the hair. Generally it is just me saying, "Hand me that oil," and I take whatever is given to me like Final Bloom, Pink, Hocus Pocus, a milk jug with the top cut off about half full of diesel, etc. I like the diesel when I'm doing a big set for a sale or something