I also like the 3x9 for my Ml. I like the ability to power up or down as the situation requires. No doubt higher power is really handy when on the range, especially when wanting to see how you bullet behaves at distances longer than 100 yards. It also has proved useful in my case when hunting for shots that were a bit further than the norm. Using a rifle scope on ML hasn't caused me any problems with regards to eye relief or to much power.

Good Luck