XFX 5850 non reference stable OC's?

[nazgulnarsil]

Wondering if anyone else has this card and what they are pulling.  
I know 925 is stable after running it for several days, now trying 950.

I got up to 985 core before it started getting unstable on stock voltage.
currently running
950/300 @ 1.089v (stock)

~350Mh

not sure if over volting is worth it to try to hit 400.  starts using a lot more watts.

[gigabytecoin]

I have xfx 5870s.... they do 950 quite easily and about 420 mhash with no voltage tweaking.