I'm not a huge Eq fan, I think I voted for it in the 'most worthless AAS' thread, lol. However, it does have some things that goes it's way, which makes it a good choice for me, personally. I will only use it in a cutting cycle, as that's where I find it works best for me. Maybe somebody has mentioned it already, but for me, let's say I want to start dieting 12-16 weeks out. Test is a must of course! However, I like, as do many I know, to use the harsher stuff the last 4-8 weeks of a prep, maybe 10 weeks for some. This is a rough estimate, and of course, there are infinity ways to cycle shit. What Eq does, is make itself as a good 'filler' compound that can be used until you reach that point of entering other compounds in. So lets say you are 16 weeks out to 8-10 weeks out, it's a good compound to use in addition to test, then continue it as you slowly add other compounds in. Say you start mast and/or tren 8-10 weeks out with the eq, then eventually you get to the orals the last 4-6-8 weeks out.
Eq simply has less sides than most other compounds that can also benefit it to be ran for a longer period of time while you are biding (lol, not Biden) you time to enter other compounds in toward the end. It doesn't pack a punch for most users, but it is painless, can improve strength and vascularity, etc for most. You can use nandrolone/NPP the same way, if you are one of the ones who do well with it too.