I have used the bushnell elite 3200 and 4200 on inline mag ML, never have worried about ER. I know everybody is different but even max load with a heavy bullet on the range all loose comes even close to my eye, coupled with the fact most shoot in the 100gr charge area and 250-350 gr bullets and I can't see why anybody would really require all this extended ER for a reasonably mild recoiler such as a ML. For god sakes I had the 4200 with 3 1/4 eye relief on my 300 wby with not a nick to show for my stupidity[
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As to which of the ones you mentioned I'd pick bushnell but look at the sightron as well. For me the Elite with rainguard and my area is the perfect fit on top of my ML. Reasonable but holds and track POI true each season, no complaints from this Bushnell owner.