I used Josie James Personnel, 2377 1598.
info@josiejamespersonnel.com
I also didn't know which agency to turn to and I got this contact because Josie is married to one of my colleagues, so I knew for sure they wouldn't rip me off!
I think their fees are pretty standard and cover everything. Mind you, I had already filled out all the forms myself, because I had tried to hand everything in to the Philippines Consulate, only to be told I needed an agency.