I bought a pair of Shimano Durace cogs. The 14t and 13t. They are nice
As a former roadie, the Durace logo was enough (or at least aliviates a little) to nicely suffer the recriminations of my angry lady when she knew that those two little metal things almost costed me 100 dollars (Ship from US to Bolivia included).
Now I want to buy a good alux frame (it will be nice to sleep in the couch for the next six months).