I had a slightly similar choice.
There was a E91 330d which stated SE spec, but I think it was ES. It had no Climate control, no Cruise, no Auto anything.
Basically you got the 'Business Radio', cloth seats and that's it.
I decided min spec for me had to have some toys.
As has been said, as much as I would love to pick soley on engine, on most journeys the toys will mater as the engine is going to be doing nothing.