In my experience, IR builds tolerance way too fast. I agree that it would be nice to have IR for those times you want shorter bursts. But I ran into its shortc

In my experience, IR builds tolerance way too fast. I agree that it would be nice to have IR for those times you want shorter bursts. But I ran into its shortcomings too quickly as a daily burner, not so different than trying to therapeutically bump cocaine. There's also dirt cheap generic IR but there wasn't generic XR back then (still?).