Splashing in Factions

[Ranger of the Force 15]

I have a single core, and since I have to splash in another faction to make a decent deck at this point I was wondering what the top three objective sets to splash in would be for the Sith, Jedi, Navy, and Alliance Factions? There are so many choices beyond three it is often difficult to choose. I am most interested in objective sets from the core but if you want to add in those from the new expansions thats fine, just post to lists, core and post-core. Thanks in advance.