The Isuzu Rodeo is schizophrenic. Its sporty looks, sure feel, and nimble highway manners make it good city/highway vehicle. A second personality surfaces when you leave the highway behind in quest of serious off-road fun. This is one personality disorder that's very easy to live with. Rodeos have long been solid machines that offer good value. Improvements and new features to the 2000 models make them even better. Changes include a restyled front end, improved seating, and new colors. Even more significant are a new computer-controlled suspension system and the introduction of what Isuzu claims is the longest powertrain warranty offered by any automaker in the US.