IMO you need to figure out what you are going to power first. If you are going to power IC2 machines, then sure Turbine is the way to go. But is it MJ machines like quarries etc. then go Industrial steam engines.
Ofc if it is both, then you can also mix them. As long as you calculate the steam produce/steam used right.
If you are just going to use a (cheaty
) energy converter, then I would not use the turbines as there is manual maintenance involved with changing/repairing the blades.