Motor Trend supplies us with a superb comparo breaking down the Porsche GT3 and Ferrari Challenge Stradale, two sports cars that are heavily influenced by their track-only brethren. Performance in most categories is quite similar, as is the totally on-edge driving experiences both cars facilitate. I'll save you the trouble of digging through the very thorough 12-page novella in search of the bottom line: the Ferrari provokes a slightly more visceral reaction from drivers— it's simply the more passionate car. But it also screams "look at me!" and costs about $90K more than the Porsche, which, with a near-identical level of road-going competency, gives new meaning to the phrase "it does the job for cheap."