Thats interesting, I've never delved into what the research says about either of those compounds. It seems that on this forum people consider Reduce XT the pinnacle for cortisol control during PCT.
I know ashwaganda has shown promise as a testosterone booster and an adaptogen as well, and I believe that 7-DHEA is supposed to be a cortisol modulator and potent fat burner so I'd say they are both likely solid choices.