I know that ED is not the most popular but they also come with a three year warrantee and the price is just a bit more than the Assassins, especially if you are buying an amp at the same time and get a package price.
However, I have not yet installed mine so I cannot speak to their performance yet. If you are curious at go to ROE or the IC and search on the 9kv.2 vids.. some impressive things... they even have some 6.5's running in the high 140s.
Take a look at this, impressive...
http://www.icixsound.com/vb/showthread.php?t=29594&highlight=metered+9kv.2