I enjoy it a lot. My friends and I use the
SDK points system to help balance units, but I've had a lot of success using wounds as a system of points as well.
I also find that it helps to restrict number of heroes, warmachines and monsters as well (as suits your fancy). Adepticon has their own comp pack, which I think is fantastic and I recommend playing by.
Also, I find that the missions in the Age of Sigmar campaign books are loads of fun, and much more enjoyable then just playing the standard 'fight until one side is dead' mission.
I have a tomb Kings army, and I am starting up a Khorne Bloodbound faction now too.
The game's rules are nicely streamlined and allow you to really get some good combo's with units if you play smart. Also, retreating from combat is a great rule and one which is really powerful to use, if you use it well.
I like the ranges in melee weapons too, really helps simulate spearmen being able to fight over the ranks of swordsmen in front of them.