Personally, I like resveratrol. But if you want an economical product containing ingredients that have been extensively researched, DHEA and DIM make more sense if the goal is to increase T, minimize but not eliminate E, and to take care of the liver in the absence of any extensive research regarding the long-term effects of such a combo.
Remember, there are a wealth of products on the that generally fall into one extreme category or the other: they either annihilate estrogen, which ain't good over any reasonable period of time, or they are mimickers of estrogen, which means despite all our discussions, we really don't have enough solid evidence (IMO) to say what's happening with an unbound estrogen that may be displaced by the mimickers.
However, we know from pretty credible research that: 1) formestane, even in oral form, is a very effective aromatase inhibitor, hence it will block a substantial amount of conversion to E; 2) DHEA, in the absence of an aromatase inhibitor, converts to both estrogen and testosterone, so it's reasonable to conclude (and is actually borne out if you search for a patent issued on 2/24/04, that included DHEA and atamestane) that DHEA with an aromatase inhibitor will raise the amount of conversion to T while minimizing the conversion to E; 3) DIM will minimize the conversion of the E that remains (and that is needed for overall health) into it's more toxic metabolite; and 4) piperine appears to enhance oral bioavailabilty of similar compounds.
I think it's great there are so many effective products on the market, but I'm amazed that in the search for the "holy grail" of post cycle therapy/natural HRT, DHEA has been completely (well, almost) overlooked in favor of more exotic, but less well-researched, compounds. And despite the focus on free T, total T levels correlate well with overall life expectancy of males, even when other factors have been ruled out!