The ALU Power is similar to the Hurricane, albeit a bit stiffer in my opinion.
If you favour massive spin and control, put the ALU in the mains at a lower tension compared to the crosses.
If, on the contrary, you want to more power and comfort, put the Excel in the mains and the ALU in the crosses. In that case, you can lower the tension of the ALU even more compared to the mains.
You'll have to experiment a bit and see what works out best for you.
Hope this helps.