exactly, but i edited the initial post (it was 5% at some point, but 2% now)
i see only ~6gh difference between eligius and btcguild, but with 9gh fee difference: advantage eligius or at least a draw.
btcguild on my best machine generates gobs and gobs of discarded shares, with five to ten times less discarded shares on eligius.
yeah when I tried 218 or 225 btcguild was brutal. but my 212.5 freq almost no rejects ,discards, hw. and the higher report rate.
So it looks like 212.5 is magic for my 2 units. oh I set diff at 256 for each worker