Who are United's biggest threat, Arsenal or Chelsea?

A week ago, as I was thinking about how United is coasting along on it's way to yet another Premier League title, I asked myself, who is a bigger threat for the title, Arsenal or Chelsea. At that point, I definitely thought Arsenal were a bigger threat because they had put in some consistent performances and Chelsea wasn't playing the greatest of football either.

Fernando Torres' move to Chelsea brings in renewed hopes at Stamford Bridge ( also the signing of David Luiz from Benfica however Torres' signing has got more of the limelight). He can make a big difference in Chelsea's title hopes. I would not discount Arsenal but now, I feel that Chelsea pose more of a threat than the gunners. No offense to Arsenal, they have been playing good soccer but Chelsea's new recruits are players of the highest quality that can certainly make a huge impact. Chelsea have some catching up to do and they will be put to test against Liverpool this weekend and it will be interesting to see if Torres gets a start against his former team.

Having said all that, I still think United are the favorites for the title. Wayne Rooney has rediscovered his goal scoring form and with Berbatov and Chicharito also notching up goals, seems United are going to be the new "invincibles" !