Which clutch is better?

I OWN A 2000 V6 STANG AND HAVE CHANGED THE CLUTCH AT 69K. I AM NOW AT A 99K AND TO REPLACE IT AGAIN. MY 1ST MISTAKE WAS CHANGING IT OUT WITH A BORG-WARNER(FORD OEM). AND NOW IT IS EXTREMELY DIFFICULT TO EVEN GET INTO A GEAR. ESPECIALLY 1ST,2ND,SOMETIMES 3RD AND REVERSE. ALSO, MY TOB STARTED MAKING NOISE AND SQUEELING LIKE 3 WEEKS AFTER I GOT THE NEW CLUTCH INSTALLED. IF I CHANGE THE CLUTCH AGAIN..CAUSE IT MAKES SENSE THAT WHAT IT SOUNDS IT WOULD BE . HOW DO I KNOW THIS SAME PROBLEM WONT HAPPEN AGAIN WITH THE NEW CLUTCH? WANNA KNOW IF ANYONE OUT THERE WHAT WOULD BE A BETTER CLUTCH, KING COBRA OR A CENTERFORCE. I KNOW AND HAVE HEARD BOTH ARE EXCELLENT BUT WHICH ONE IS THE BEST FOR THE MONEY. THANX

PS- I NEVER REALLY HEARD OF SPEC BEFORE, UNTIL I JOINED THIS SITE PLEASE HIT ME SOME INFO(THE CAR IS GONNA BE A DAILY DRIVER AND SOME VERY MILD STREET RACING AND HARD DRIVING SOMETIMES. THNAX AGAIN PEOPLE!