I've used Denkall's test400 in a couple cycles. It works and it's cheap. I only have 2 concerns, number one is that it can be underdosed (so I usually up the dose a fraction) and number two, the injection can hurt like a bitch. However, if you mix it with something in the syringe (I've used both EQ and deca) then you can have painless injections. Shoot it into your glute alone and you'll be limping for a few days.