@elmuzzlebreak - I need to edit my statement above, the 7-35 MK5 doesnt come with illumination in the H59 reticle, my bad, so if thats a key feature you need the MK5 doesn't offer it at all with the H59. As far as the ATACR at 35x, I feel its still very usable for the applications you mentioned, condition dependent. (heavy mirage, fog, etc.)
As for the price I agree the MK5 can be found for less $, but from my experience I feel like you do give up a bit not going with the ATACR. Not saying the MK5 is a bad optic by any means but again it comes back to features I think (that being said the Army did just go with the MK5). Between the two, i think Illumination, weight, turret feel and features and reticle are the key differentiators. Personally, I favor the ATACR glass quality, overall image, fit and finish and feature set more than the MK5, but again thats just me.