Agmatine is a solid add to your normal preworkout if you're looking for a bigger pump. Also may have benefits for nutrient partitioning and blood pressure, YMMV.
The thing thats great about Agmatine sulfate is it works immediately. There is no loading phase or delayed response with this product. Iforce has brought out a very high quality Agmatine product. I got great pump effects and a mild boost in vascularity. I will warn every one that agmatine taste like pure chemicals. Do not mix any nice tasting supplements it will surely ruin the flavor. It is a bit pricey but definitely worth the price as far as results.
Better than regular arginine but great combine with arginine. Gives amazing pumps everywhere!!!