The Yaris' only attraction is fuel economy (still not that amazing at 36 MPG highway), its interior is the worst of any new car, and it is not nearly safe as some of its competition. The Matrix is completely the same as the Pontiac Vibe, except for its styling. I would choose the Vibe because, you could talk the dealer down more, and you would help an American manufacturer. The new Corolla has little over the old one, or as Car and Driver put it "no quantum leap forward" The previous Corolla was reliable, but the 2009 is too new to tell. The Camry and Tundra have below average reliability or worse from Consumer Reports, and by my guess the Corolla should follow along with that trend. The Saturn Astra would be a good equivalent to any of them. It is more expensive than a Yaris, but bigger and better. It costs the same as a Corolla od Yaris, but comes with many more features. The Astra did so well in Europe's crash testing, it was rated as Car and Drivers top safety pick for cars under $25000, but has yet to be tested by the NHTSA. The Saturn Astra is a rebadged Opel Astra, the second best selling car in Europe. It is made in Belgium, and imported to the US.The Astra's consumer rating from Edmunds.com is higher than any model made by Toyota. Here is a direct comparison between the Astra and the Toyotas:
http://www.edmunds.com/apps/nvc/edmunds/VehicleComparison?basestyleid=100913114&styleid=100981570&styleid=100980399&styleid=100919847&maxvehicles=5&refid=&op=3&tab=pricing
Here are other reviews for the Astra:
http://www.msnbc.msn.com/id/23408391
http://www.detnews.com/apps/pbcs.dll/article?AID=/20071219/OPINION03/712190323/1148/AUTO01
http://motivemag.com/pub/feature/first_steer/Motive_First_Drive_2008_Saturn_Astra.shtml
http://automotiverhythms.com/testdrives/td_2008SaturnAstra.php
http://cars.about.com/od/saturn/fr/08_astra.htm
http://autos.canada.com/news/story.html?id=a93a28ac-6533-460c-97e0-a37c07dfac69
http://searchchicago.suntimes.com/autos/research/ciminillo/690138,srch-auto-JC121107.article
http://autos.canada.com/news/story.html?id=76e9d5a9-48ea-4d02-9e20-79cda11da6c1
http://www.autoweek.com/apps/pbcs.dll/article?AID=/20071113/FREE/71113001/1005/rss03
http://www.edmunds.com/il/saturn/astra/index.html
http://www.motortrend.com/roadtests/hatchbacks/112_0708_2008_saturn_astra/
Whatever you buy, go to www.carsbelowinvoice.com to get a good deal without any haggling