Hai 
Other than the extravagant heatsinks on one of them, is there any difference between the below performance wise? I really can't see a diff between them. Same speed, same latency, same rated voltage etc.
http://www.overclockers.co.uk/showproduct.php?prodid=MY-288-CS
http://www.overclockers.co.uk/showproduct.php?prodid=MY-203-CS&groupid=701&catid=8&subcat=1517

Other than the extravagant heatsinks on one of them, is there any difference between the below performance wise? I really can't see a diff between them. Same speed, same latency, same rated voltage etc.
http://www.overclockers.co.uk/showproduct.php?prodid=MY-288-CS
http://www.overclockers.co.uk/showproduct.php?prodid=MY-203-CS&groupid=701&catid=8&subcat=1517