Clarion speakers are OK and are difinitly better then the stocks, but I recommend you go check here
DiscountAve.Net I bought the Infinity Kappa 6.75 from here. They have free shipping and I've had no problems with them. Keep in mind two things when replacing door speakers in the X, try to buy a 6.75 speaker as this fits right into the existing space where as a 6.5 will need a little custom work (at least in my 2001) and replace the tweets while you're in there or else you will have to do it later. Good luck.