Good time to enter SBI

CMP of SBI is currently around 736. Looks attractive to me because -- PE ratio is 8.29 (significantly lower than HDFC and ICICI which are at 18/19) -- ROE is also higher than HDFC and same as ICICI @ 17% -- PB ratio is also lowest amongst the three. -- corrected 20% from ATH of 720ish With lowering of interest rate by RBI (albeit marginally), it's looking decent for banking sector. Would appreciate your thoughts.