I had my best cycle when he retrieved on CD 25 or so!! URGH!! I do think that 300 is MUCH better even if it takes you longer to stim. I was just wondering. I guess I think of EZ-IVF as low stim. BTW...I never waited between cycles unless you count the prep cycle and I had back to back IVF's December and February and all was well. I think it just depends.