Winstrol tabs are shit.
Stay away from them.
Winny is also oil based.
My cousin went on Deca he is in the para's and gained loads and kept it. Not touched the stuff since but he has kept all his gains and is growing at a good rate now. He was like a whippets hard on before though. Weighed fuck all.
He also told me your best off just 'banging' it in Haha. As in jabbing the syringe into your arm and pushing in the plunger quick so the fluid goes straight in.
I really dont know anything about injectable steriods though mate.
Best off pm'ing a guy called Robb on here