Hi All,
Depends on what you mean by best and how you drive. The fastest car in the game is the Sledgehammer, and a couple of others are still faster than the F50GT, which many people use on XBL. But other cars accelerate faster than the F50GT at Urban Tracks Lengths and many other cars can turn faster than the F50GT.
If you think the best car depends on how many Kudos you can rack up, some of the cheapest cars in the game are the easiest to learn to do Kudos moves with and the fastest way to rack up Kudos Combos.
Also depends on what Class you like to race in. So far, I am at Rank 5 and a half and have 55 cars and over 10 Million to buy more cars. I have favorite cars in each class, Ultima GT, MC12, 2 Corvettes, 2 Jags, all the Lams and the F40 and the F50. I also buy certain cars just because I like the way they look, the paint job, etc. I have all the cars with stripes, and all the ones with two tone paint jobs.
Later tonight I am going to buy the Ferrari that wrecked on the Pacific Coast Highway the other day. I will get around to buying the F50GT in the next month or so, but it is not at the top of my list. I prefer the Jags and the Corvettes as well as the F1. The F50GT is really just a faster Ultima GT, you can drive both cars exactly the same way, except for throlle management.
Few tracks in the game have a layout where pure top speed determines the winner. How well you drive and especially how well you can powerslide is much more important than having the fastest Ferriai.
Happy Racing
MidiVox