Mixed reviews from me, I tend to get a knot on every Deca200 injection that takes 7days to clear. I use clean pin with every inject, so I have to think the knot is due to something in the gear. Most people don't get a knot and like the gear - but it is not my favorite choice.
Keep us up to date on how you feel and what your gains are. I found I stopped the knots by venting the vial and placing the bottle in hot water. I guess this evaporated some BA. No more knots. I still prefer human grade Deca, but it does cost more