If you want to use it as an amp simulator, or as a DI for live sound, and you want these applications to be applied like an amp, after your effects chain, put it at the end. If you're just using it as a dirt pedal, then play about with the order, although you don't have much to play with. It depends what you're using your EQ for.
If you use your TU-2 to mute, and you use the sansamp to feed the desk, the TU-2 needs to be before the sansamp.