Well, do you want electrical failures or an awesome sedan?

 

rs4 is too small for my liking...id say carbon black 550

 

audi RS4 all the way. period.

 

Rs4 Ftmfw!

 

both great cars. 1-2 year old M5 would be the choice. secondly if you want more performance get the audi more luxury get the 550

 

Yeah if you don't mind used, M5 for sure! If not, then definitely RS4 is the right way to go!!

 

rs4, and I'm a hardcore BMW fan. The only reason I'd take the 550i woud be if I needed the space. Not space for kids, but clients and friends. The a6/s6/rs6 is the logical competitor for the 5 series so this a rather odd comparison.

rs4 versus m5= eay choice for me

 

RS4 for me.

 

550i vs RS4 is almost like comparing Bentley GTC to a 911 GT3..
same concept but completely different feel..
Have you driven them/made up your mind?

 

rs4...

 

+1

M5 V10 500hp!!!!!

 

RS4 all the way. The suspension and the seats are one of the most comfortable rides ever. IMO the 550i Sport looks better than an M5. I drove the RS4 22 hours and it was the most comfortable car ever.

 

Thats a tough choice....probably 550i for me..Especially if it was my daily

 

RS4 all the way!

 

out of those two RS4 without question!

used M5 would'nt be a bad choice either