Hi Ptflyig,
I got the spanish base and T&C; still working on the 'take' home numbers as taxation in spain is not yet clear for me. All the numbers are in gross and in Spain you get some tax exemptions under some conditions.
You could PM me for more details.
If more established Spanish base F/O's around maybe they could help us with some tax clarifications as with no tax exemptions i might end with 3000 Euro/month take home with 70 hrs flying, and way less then that in the 3 months off.