I agree with the Bodyguard from New York. Too bad I can’t use deca anymore, other than low-dose. Deca makes you strong fairly quickly and with proper PCT, the ability to hold on to those gains.
Other than the magic of deca; the compounds that produce the slow and steady gains, usually yield the most keep-able strength in the end. Think primobolin depot, anavar, and growth hormone.
On the opposite end of the spectrum you have your trenbolone and anadrol, which catapult your strength into the stratosphere, yet when it’s over, your strength can plummet so much so that some people get depressed at how weak they’ve gotten. Which is why (and I’m just babbling here) I NEVER end a cycle with tren.