I agree with the majority here....I love my 458 Coupe (with IPE F1 magical sounding exhaust) but also drove the Spider and it was fun but not as rigid and planted. Can't go wrong with either!
I have a 15' and there's no Bluetooth music streaming on 458's with the exception of the Speciale. Having the Ipod connector in the glove box will give you the option of using a bluetooth adapter for streaming. I have the coupe and love it but wish I got the spyder!