on the button with K6s

[proell]

4-handed.
blinds are 150/300

I have t1600, both SB & BB have me covered.
UTG folds.

Pretty sure this is +ChipEV, but not sure it is +$EV. both players are average-to-tight.

what's the move?

[lastchance]

Depends on opponent's stacks. But this is an all-in 90% of the time.