I'm not an Alfa owner yet but I am seriously thinking about it. I am changing my car later this year and I am thinking that a 159 might be the way to go. I've quite a few posts on this site already and I am getting a good idea of what an Alfa is like to live with - especially the thread about the top 5 likes and dislikes.
I've currently got an Audi A3 TDI170 which (to date) is the best car I have ever owned and I really don't have a bad thing to say about it. One of the reasons that I am not just buying another A3 is I need something a bit bigger. I've driven the current 3 series and although I have to conceed it is a great car to drive I think it's appearance is uninspiring at best. Same goes for the A4 so I am looking for somthing that is going to stand out from the rest of the crowd hence a 159 being a strong contender.
I cover a lot of miles with my work (about 25k a year) so whatever I get has to be able to be take a lot of punishment and not fall apart after a year or so.
I'd be really interested to hear from any other ex-Audi owners who have converted to see how they have found owning an Alfa.