I'm currently in the midst of a MENT (175mg) + DHB-cyp (300mg) cycle. As the DHB has built up I've been able to taper my exemestane to nearly zero. I've used Ralox since beginning MENT for gyno prophylaxis. It isn't useful for PCT, but is fantastic on-cycle as it the most effective SERM for preventing gyno. And since it activates the hepatic estrogen receptors, Ralox also improves the dyslipidema encountered with use of AAS.
Best I can figure out, DHB is a chemically forced 5a-redution of boldenone, it is not a true DHT derivative although that is how it is typically classified. If it happens in vivo at all, it is to a minimal degree. With its very long ester, I doubt EQ users would accumulate any significant DHB except maybe at the highest dosages.
My DHB vials are 100mg/mL and I inject it with the MENT subQ twice daily, so there is no PIP. But it is an inherently inflammatory compound... even diluted with the 50mg/mL MENT, six hours after the injection I get some induration and tenderness which dissipates by 24 hours. It's minor and does not interfere at all with workouts or activities. Next blast I'm planning to try stenbolone in lieu of DHB.
I will say, I feel fantastic on MENT and have had no issues with prostate or increased hair loss. Skin is oily but pantethine + carnitine help with that, and I've experienced no acne. I've tried adding some test-p and noticed nothing from it, so MENT/7a-mE2 does make a complete test/E2 replacement at least for me.
Blood pressure was fine on MENT solo, but I do use azilsartin (basically an improved telmisartin) @ 80mg/day. I did find that DHB increased my resting heart rate so I just added nebivolol 5mg/day. Together these make a great cardiovascular risk mitigation package for AAS users that have significant increases in BP or resting heart rate, without appreciable side effects. I haven't noticed any decrease in strength with nebivolol, only slightly reduced cardio capacity which is expected with the brake on heart rate; I do mostly low intensity cardio so it is a non-issue for me.