the best thing i have found is Netherworks Hair conversion kit.  Its a python script and you can use it to create fits for just about any hair on the market.  I have specifically converted the hairs you mentioned and had great results.  And the best part is, its not much more than the average set of hair fits.  He has packs for the EF people too :)

You can find them all at content paradise :)

brandy

Brandy