I think I am ahead against the CO.
SB will have quite a wide range, including small pairs suited connectors, but as well monster hands, which he tries to trap.
Push or Check?
If I check, the pot is already pretty big and I will not have any fold equity on the flop.
##########################################
iPoker Game 6109400069 / Tournament
Table ‘Super Turbo’ 50c Double Up*4 - 18-Nov-2014 16:58:49
Blinds : 100/200
##########################################
4 players
[SB] (945)
[BB] Hero (1095)
[1] Cutoff (100)
[But] Button (1060)
Hero A
T
Initial Pot: 300
Cutoff is All in
Button folds
SB calls 100
Hero???
or 
VS