Ok first Mida was my first exotic way back in Y1 so for me to be using it isn't because its popular it is because I know it and how it can effect PvE foes. The HCR Stagger combined with its high clip capacity(21 rounds) makes it a very good chose for a Solo PvE player to use and survive missions and Strikes. Plus in PvP the Stagger was negligible unless your hard scoping sniper lanes. Then that is your fault for not paying attention to your surroundings. Just because a weapon or piece of gear is over use does not mean it is OP just that it is effective.