I will tell you that in MY opinion, 400mg would be fine but I have been recommending not to use any at night unless it is only a couple hundred mg. I have not yet seen an instance where there was a discernable difference between another dose and just letting the 400mg run the entire course. I do NOT have the experience Big A does, and don't know if he agrees with this or not. I am simply giving my recommendations based on my experiences both myself and with a few clients so far.
Balplayer: It didn't hit me like a hammer as I had expected. However, it did hit hard enough for me to notice it BUT it didn't take an hour to peak - it took only about 15-20 minutes. I get very vascular anyway, though. This stuff is a MUST before hitting the stage. It is simply incredible what it does for your hardness and vascularity.