to call or not to call?

[yimmy9]

heads up in a sng. Chip stacks about even,5300-4700 slight advantage in my favor, blinds 200,400. I hold a6c in sb, I raise and it to 1000 to go. He sits for a while and calls. Flop 8d7c and 4s. I lead for 800 and he ista-pushes. What now? He has shown all his bluff's to many to count. Will post results and thoughts after a few responses.

[Myst]

This should have been a push preflop.

Other than that, you cannot bet less than what you raised preflop. Seeing as how hes super agressive, I would have just checked and looked for a better spot to put my $ in.