I have both the WB Diamond-Asym and the OES Micro. The WB probably edges out the Micro in useful coverage. The points of the diamond seem to give you a little more room on the ground that is protected. On the other hand, the OES Micro sets-up with a more taut pitch unless you use a full-length ridgeline with the WB. They are both minimalist tarps that will cover you and your hammock without much of an issue; just a matter of your preferences for pitch and coverage.
All my morning aches and pains went away when I discovered hammock camping!