Yes, Xenon for the win...

Not only do they have more diff balls, which allows more free wheel and prolongs thrust bearing life, but they are the quietest, and when matched with XENON/Panaracer pinions, they last forever. I have yet to replace one in 2+ years from wear or stripping, I only replace them because I feel like it.

We have had the 70T in stock for about 8 months now. They were available a long time ago and got discontinued for a while. Teru fired up a new production run of them as his products started trickling back into the US market over the past year or so. It is THE spur gear if you want to run a small gear.