MacBook memory

[drak3]

http://www.overclockers.co.uk/showproduct.php?prodid=MY-113-CR&groupid=701&catid=930&subcat=932

http://www.overclockers.co.uk/showproduct.php?prodid=MY-143-CS&groupid=701&catid=8&subcat=936

Will these work, and which one is better you think?

Thanks.