I used aps like MA my first go with nitrate and I'm on San right now since they are the only two brands of nitrate not combine in a pre work out.
They are evenly priced if you break it down.
However San will only last 20 days per bottle 12 tabs a day
Aps is 8 caps a day
I'm going back to aps after this since its easier to take four pre four post in capsules versus the six horse pills from San.