I opened this thread because I have my own opinions on Deca and EQ over a long period of time. My opinions are my own and purely anecdotal.
I'm not going to get into a debate about any gurus as I haven't paid enough time to speak properly on the issue, and do not anticipate doing so.
Test and Deca were the bread and butter of bodybuilding for a long time. There was good reason for this - they work. EQ gained favor somewhere around the late 80s and early 90s. I think it was in part due to the amount of fake Deca on the market while we could buy Equibold in a 50cc bottle we knew (?) was real. Also Dan Duchaine has some feelings on it which may have given it some notoriety, and in the late 80s people were chasing what was new (even though Parabolan was plentiful then - imagine that!)
I also never, ever heard of "Deca Dick" before the internet, nor EQ induced anxiety.
Not saying it isn't real - just never heard of it from either my friends or peers in the gym, nor from my dealer who was a primary in the region at the time. He named his dog Deca, so it can't be all bad anyway.
Again, all anecdotal, but I think sometimes these things are self-fulfilling prophecies, seeing as message board are flooded with these notions. I cannot say for sure.
In my experience, Deca performs the best with the least sides, mg for mg. EQ is a non-optimal alternate for Deca when I just want to change things up for a while.
Deca will always be in my toolbox, EQ often on the second shelf as I feel it is inferior for bodybuilding compared to Deca - in my experience.
There are other hormones out there, each with its own strengths and weaknesses that will likely vary per individual.
Each of us can take the "popular" information, do their own "testing" and come to their own conclusions.