Awhile back I wrote about why I didn’t think the American Customer Satisfaction Index claim that Yahoo beat Google for customer satisfaction was evidence of a broken indicator. Well here is another indicator, but this time it puts Google clearly in 1st place, while Yahoo has been improving: Search Engines: Intense Competition Drives Better User Experiences
Google still has plenty of room to improve (for one example, their blog search is still very poor). And Yahoo is better than many people realize. But I think Google is still clearly better from my experience and looking at the available data (Google keeps gaining market share for one import piece of data).
Related: Search Share Data, Checking the ACSI – Meeting Like Google – Improve Google