Forza Roma! I think Roma are too gung-ho to challenge for the title but they should be good to watch this season with Zeman at the helm. I didn't manage to catch the Inter Milan match but they have made some astute signings by the looks of things and have set up very well (going by the formation on flashscores). Juventus looked very strong against Parma though, they've strengthened well over the summer so they should be able to cope with CL commitments and will be very hard to beat again.
Fiorentina have made some very good signings whilst spending very little (in transfer fees at least) - David Pizarro, Borja Valero (surprised he didn't go somewhere better) and Matias Fernandez. If they can develop an understanding, particularly with Jovetic and Ljajic in front of them, they can be pretty deadly and one of the best teams to watch in Europe. They've also brought in other guys in like Aquilani, Gonzalo Rodriguez, Roncaglia and El Hamdaoui.