Ah, now I read ya, I personally have never gone over 750, I don't really find taking an absolute retarded amount of test that much better than taking a feasible amount. What I mean is this....you will not see much more difference between 750 - 1000. But there is a huge difference between 250 and 750, you follow me. If size is what you want it will also depend on what you stack it with, your calorie intake and work out regime. Don't waste money that doesn't need to be wasted, talk to some of the moderators and see what they recommend for a good cycle...they'll all give you good advice.