In 2020 the Midas ED was replaced by the Midas G2 UHD, and the only seeming optical upgrade was to the glass _ UHD vs ED. The other change was to the bridge design and color. The Midas ED only allows your little finger to be wrapped around under the bridge. The G2's smaller bridge allows the normal 2 fingers to be wrapped around. FOV, ER, and CF remain identical between the 2. Weight is 1 ounce less in the G2's.
I have the 10x42 Midas ED's and they compare very favorably to my 10x42 Monarch 7's and Vortex Vipers. I would give an edge to the Vipers, but it would interest me if the G2 UHD's glass might negate that gap.
I have the Midas G2 UHD in 12x50 as well as the Celestron Nature DX ED and several other 12x50's and a 12x42 to audition as my 12x outside porch bins. Haven't stated the shootout yet but was impressed when looking thru the G2 UHD's.
Personally, I think the Athlon Midas's are one of the better values around for the $$ spent in that range, at least here in the USA and our prices.