http://www.lego.com/eng/racers/products/ferrari.asp?product=f8143
I like it better than the spyder but the front end looks like crap. They did a better job with the Enzo I think.
I have the 430 Challenge and I made the yellow version. IMHO it is a blast to build. It is easy and fun. It is absolutely worth it, if you look at it as what it was meant to be-just a toy with the purpose of getting kids bit by the Ferrari bug.