I`m surprised Namecheap haven`t got a mention yet.
They have got a $6.99 transfer offer on right now and you get privacy on the domain initially. I know also with Namecheap that if you have 50 + domains you can request a special rate so you may get it even cheaper than the current offer?
Good luck whoever you go for.
Edit - just seen you went with Moniker anyway. Good to hear that you`re seeing a good service.