Hi i was wondering if anyone has worked with either, I am trying to find out as much as I can about them both as I would like to work with them but need to know about them for perpartory immersion. Any info would be great, thanks
Many people on here have worked with both, so the Search function is probably the best way to read through a lot of accounts. 
Used belial for a law matter and he worked with great effincey. Gave an offering of my friends blood who I was doing the working for and also agreed to distribute 666 of his sigils in random places! Cost about $50 in ink lol and will probably take me a year to drop all them bitches, should of negotiated for 66 lol