Depends
Hi, at it's best at low level with the wings back at 45 sweep doing 450kts. Solid stable platform, reasonable roll rate and crisp in pitch. 500kts plus best at 63 sweep.
At its worse at 20,000 feet over Iraq in 8.6 fit when a break to avoid what appeared to be a missile lock resulted in a feeble 90 degree direction change and a loss of about fifty knots of IAS.