have to agree with last post - you tend to get what you pay for - but for a decent middle ground check out 'Grabbers' - badly named brand but huge in USA (often come as standard on jeeps etc) - should cost about £120 a corner fitted.
sorry - wife pointed out I am an idiot - make is 'General' (very USA) and model on my RX are 'Grabbers' - done about 5k and grip, noise etc seem on par with Dunlops previously fitted.