bujubanton I agree 100%
I bought the Limited edition at launch and traded it in for this without hesitation when it was released and it was well worth it.
You get all but 1 of the DLC released since it's release (the classic car pack was released days after this released) that's an extra 100 cars and an extra track.
But what you also don't get is the VIP status (T10 send you free cars every now and then and you get a [VIP] logo online), the limited edition cars (Ferrari 430 Scuderia, Lamborghini Gallardo Supperleggera and the Porsche (997) GT3 RS), the pre-order classic car pack and limited edition tracks (The snake named tracks from FM2, Benchmark Ring) you have to buy them off the marketplace for MS points to get them
Apart from the lack of DLC which came with the Limited Edition you are getting 3 exclusive cars, the Koenigsegg CCX (absolute animal), Mercedes-Benz SLS AMG (very fast and a laugh) and Lexus LFA (focused track car).
In my eyes you should buy this (17.99 is a bargain) and buy what you want of the marketplace for a small fee. I recommend the limited edition car pack
If they charged 24.99 for everything it would be 5 stars, but 4 is good enough