If by the Old Station you mean Albercones (the bit with the tarmacced floor) I couldn't dissagree more. Hideously pollished, undergraded, vertical horror shows. The only crag more pollished than Minus Ten i've ever been to!
And Andi, if Los Cotos is the south facing slabs further up the valley, I thought they were pretty unpleasant. So polished that slate has more friction. And at least slate has crimps.
Did you get Amptrax ticked? That's one I definitely want to do!
is this the big 7aish tufa at makinodromo? http://perso.orange.fr/jauffres/grimpe02/image3.htm looks awesome