Cannot speak for the Menace, but I did own a Falcon Merlin and it was a very good scope. The only significant downside for me was optically in certain circumstances: if the sun was in front or to the side a little, the light bouncing off my eye's cornea would be reflected into the eyepiece lens, then reflect back at you in a rather annoying manner. Not massively serious, but annoying. I've changed my cornea.
B.A.S.C | HW100Tuning KT250bar+reg+tune .177+4-16x50 | HW95.177 +4-16x44 + Paul Short Stage 4 & Trigger Tune | TX200HC.22 + 4-16x44 | HW97KT.22 + 4-16x44 + Paul Short Stage 4 & Trigger Tune