
 Originally Posted by 
GearHeaded
					
				 
				you all know what I'm going to say , right ?   
run both !   
actually , I would simply add one bottle of mast prop as an extra to 'front load'. your mast e.   so get the mast E you need to run the cycle, but add one bottle of mast P to front load the mast e.
basically this will get the mast kicking in a bit quicker and you'll get more out of your 10 week cycle.
weeks 1-2
Mast P -  150mg 3x per week
Mast E - 600mg per week
weeks 2-10
Mast E - 600mg per week
running that one bottle of Mast P, along with the Mast E that first week or two will get things going a bit quicker. 
just an idea..  if you don't want to get fancy, then just run the Mast E .   I use mast P a lot myself, but usually for front loads or for burst cycles or short blasts (4 weeks or so)..  a 10 week cycle the mast e just makes more sense