There are only a handful of true performance-oriented crossover SUVS. Among the more notable are the Porsche Cayenne, the BMW X6 and the all-new 2009 Infiniti FX. Like its competitors, the FX is more a tall performance sedan than a rugged off-road explorer. True to its Infiniti roots, the new FX is fast, loaded with luxurious trappings and technological gadgetry and is one of the most alluring and fun-to-drive vehicles in its class. And, if you can live without the V8 engine, the V6-powered FX35 can even be classified as affordable – at least by luxury car standards.