Age of Sigmar is pretty firmly in my repertoire, but I play games based on what campaign the local store is running, or what my friends feel like that day. We all like AoS, but the current hot thing is kill team or 40k.
There's still lots of areas for improvement in AoS but its much better then it was. It's an incredible black spot on their part that theres still no free peoples update, but I do quite like the models and factions they've been putting out otherwise. The growth in lore is real nice as well, although it takes some getting use to with this 'living lore' or whatever they call it.
I've had maybe three games of it so far, and I'm having a whole day of gaming tomorrow that's going to be primarily AoS (And maybe some 8th edition fantasy).
Part of the problem right now is that we're so spoiled for options. My local club runs a different campaign each month or two, and literally picks between ten or so different game systems. Unless someone has something planned when a campaign starts we decide the campaign after that by putting names of game systems in a hat and the boss man draws one. Whoever pushed for that system to be included then writes/sets up the campaign, and has about two months while the current campaign runs to do so. Last draw had Kings of war, Age of Sigmar, Kill Team, 40k, Necromunda, Warmachine, Hordes of War, Frostgrave, 9th edition fantasy and some other one I've never heard of. There's a huge number of different games available now, when not that long ago it was really just a toss up between GW Fantasy and 40k.