Well you might look for certian specs. Me personaly I prefer Maxtor. also check out this post
http://empeg.comms.net/php/showflat.php?Cat=&Board=offtopic&Number=87618&page=0&view=collapsed&sb=5&o=0&fpart=1#Post87794
Norton Ghost is a good program just read the README file carefully. if things turn south on you there is the possibility of turning your old partition into an exact copy of your brand new hard disk. Which has happened