blood level stays more contstant with 75ED, but there isn't too much difference.... Zyglamail had a nice post up with graphs about this very topic......
cant say for sure on eod at 150mgs but i have done 75mgs ed on 2 different cycles and both had grrrrrrrrreat results...i have thought about for my next fina cycle to do 75mgs in the a.m and 75mgs in the p.m as well i am sure my stregth would skyrocket