Haha named one relevant guild in your whole list. Not familiar with some of the castling guilds but if you're talking about best all around guilds based upon activity, skill, and loyalty SLX and Alumni. Apostles and SNC share members but generally the same crew bounce back and forth so if you can call them a guild I guess they can be considered top 5. All other 'guilds' are just bounce around flavor of the month tags.