Since I have both consoles I'll answer this question from the perspective of a owner of one HD console :
No. Despite PSN's downtime many of the games I'm looking forward to are coming exclusively for the PS3. If games like Infamous 2 and Uncharted 3 were available for the 360 then I would considering switching.
Who's the best Pac, Nas, and Big. Just leave it to that.
PLAYSTATION®3 is the future.....NOW.......B_E_L_I_E_V_E
Slaughterhouse Is The Sh*t .... NOW ........ B_E_L_I_E_V_E