As to me, I really need some Exotic pairs like USR/RON, and as I know olny SUXO bank offers such pairs :(
Currently I use AvaFx and they act very well, spreads are always exactly as they stated! But they do not have many pairs.
I know this thing... I also used two accounts Demo and Real. Same situation as you had. They always random raised spreads and you always in loss... if you get good profit they almost 100% will do 5.12 from general business terms :mad:
SAXO is... just read their general business terms:
http://www.saxobank.com/site/open_account/Documents/General%20Business%20Terms%20ENG.pdf
Read 5.12
And you will see that these guys may TAKE all your profits just provided that it was error in their system :) I am sure they will never let any...