As fast and smart payment process I prefer paypal to give it first position and then skrill and neteller. You know paypal can possible to all over the world but not in bangladesh. With paypal anyone can transfer their money to bank and it is easier to deposit too.
But I prefer skrill and neteller to invest on Forex as fast payment processor, since 2009 I am using skrill as payment processor whichone named as moneybookers and I did not see any problem with this payment processor.