I bought my Yaris Liftback after selling a new 2007 VW Rabbit which was not a good fit for me. The Yaris is everything the Rabbit is not: fun, light, thrifty, nimble, and solidly built. I'm 50, and I grew up driving basic cars so the simple nature of the Yaris really appeals to me. Great visibility, light and intuitive controls, roomy (I'm 6'5" & 175 lbs), practical, and very frugal with fuel. So far, I'm a very happy new owner.
Very easy to service (oil/filter changes, and basic maintence is a snap), very good interior ergonomics and sight lines, cool interior and exterior design, Toyota quality.
Make a tach standard on the Liftback, add a bit more power to the stereo so I can hear my iPod better, and rethink the dangling seatbelt thingie in the back - otherwise I love it.