It depends on what defense you are using and if you have any specific desires for your site lockout. If you're using a Philistine defense, purple sites work great (Phillies are strong against purple). Another thing is to use Babylon(s)/Babylonian Banquet Hall and throw all the LS into the Banquet Hall (so your opponent has to have access to green sites). If you want to keep throwing LS back into your deck, Hormah is always a nice add. Nazareth protects you from Mayhem, Pergamum from DragonRaid, and Golgotha from ignore abilities.
What is the focus of your deck and defense?