Just discovered this website and joined a few minutes ago. I'm trying to decide which hybrid to buy. Had my heart set on the new Prius but stopped at the Hyundai dealer to take a "look-see" and I discovered the Sonata Hyundai!!!! I was impressed with all the features, specs, comfortable ride, battery type& lifetime warranty, etc. I don't know id i should even bother looking at other brands---don't see how they could compare. The problem for me is the brand. Have been a happy Toyota owner for 40+ years and I lack the confidence to choose a company that doesn't have nearly the track record as Toyota. I keep my cars for at least 10 years so I would benefit from Hyundai battery warranty in this case. Can someone give me an estimated guess as to the average cost of replacing the battery on a Prius on down the road? What do they cost presently? Incidentally, I really like the body style of the HSH as compared to the Prius...night & day! Can anyone provide any additional info to boost my confidence in Hyundai? I'm ready to buy. Thanks.