Propgandhi (Today's Empires, Tommorow's Ashes and Potemkin City Limits)
With Honor
Rise Against
Sick of It All
Agnostic Front (nothing earlier that Liberty & Justice for is similar really)
your demise are pretty sick, not exactly comeback kid but decent hardcore
you might want to look into dead swans aswell

and i agree with garden of light, honour among thieves are top notch!