And I've never taken masteron, but I am one of the few people who LOVE d-plex. I get a good energy/mood boost, great agression (sometimes I have to check myself outside of the gym..at work etc.), strength gains are decent but nothing to write home about IMO. Great for a recomp. Definately increases muscle hardness and vascularity if you're lean enough.
I can say, however, that it is nothing like Methyl Masteron