I do long medium dose cycles. Test and deca. Upper end is 600mg total, "maintainence dose" is 200mg every 10 days. I taper over a period of 2 months.
I taper off to 200mg every 2 weeks for a few weeks then stop. When I stop, I feel better (strange), As though there's less stress on my body. Of course my endurance in the gym is lessened. But strength is high. Appetite is much higher off roids too so I eat less clean and train and maintain my weight with a slightly higher body fat.
Never experienced a crash. In fact, I feel better.
But I did experience a crash when I did my first 3 week dbol only cycle.
I think with injectables, if u taper off, you'll be fine.
What I dont' understand is when people start their PCT 2 or 3 weeks after their last shot of test or deca, claiming it's because of the half-life. But hell, there's still another half of the drug in they system!!