We can all think of the valleys, with Operation: Zero Tolerance and Operation: Wide Awake, etc.
Harder to think of the peaks. Here are some off the top of my head:
1. X-Factor Vol.1 #26 - X-Factor, consisting of the original X-Men had just saved New York from Apoclaypse and his Horsemen. New York held a street parade for the mutants, celebrating them as heroes.
2. Uncanny X-Men #228 - the X-Men were fighting the Adversary in Dallas at Forge's tower. Two reporters were swept up in the commotion, and were reporting and filming the entire battle. The X-Men were being seen as the heroes they truly were, and this was being telecast live. The X-Men were seen as heroes as they gave up their lives to stop the Adversary, live on tv, and they were revered as heroes for a short time after that.
3. Uncanny X-Men - whatever number issue #1 of the X-Cutioner's song crossover is - Professor Xavier addresses a crowd of humans at a concert in Central Park, advocating the rights of mutants. He is gunned down by Stryfe posing as Cable, but he was getting his message across. I am sure this was earning him some good will for mutants.
Those are three exampls off the top of my head. I am sure there are more.
OK, some good ones although I recall Professor X getting booed by the crowd when he made his speech. But for any time the X-Men got a little credit, there would be some horrendous act done by or blamed on a mutant and we'd be told "we're never been so close to extinction!" only to have it simmer over & go on like usual. I'll like to see the man on the street saying something pro-mutant like someone saved by the X-Men. Have them debate the haters on TV.
One thing that's odd since M-Day, why be up in arms over mutants at all anymore if there's only 200 left? The fear was about more mutants being born, if that was seemingly gone, no need for that Church of Humanity crap.