I would not recommend the S40, go to at least the DTA S60. It's better featured and has datalogging. But it wil certainly run it fine, do sequential box etc etc

But as said. Who will be fitting and tuning it ? Is it basic you want, or something fancy ?

If you arent fitting and tuning it yourself, make sure there is someone handy who is happy and competent with whatever ecu you choose. Although the DTA's are very easy to use.