I would say I prefer Marvel over DC, not because of the characters but because the writing is better. It's not hard to find a well written Marvel book, DC on the other hand is very hit and miss. Look at any top list of DC comics and Kingdom Come will be on there but honestly, it was average. It wasn't bad, just not mind blowing. It doesn't have the depth of Watchmen or the girt of Dark Knight Returns. It's just kinda meh. 
 This is an Elseworld tale (non cannon?) where one day a hero goes a little far and starts killing. The public are sick of people like the Joker continuing to kill, get captured, break out and then do a little more killing, so they are OK with this. This leads to all our favourite heroes essentially retiring or just staying in their home territory. Years pass and a new breed of heroes now watch over the world but they kill their enemies, even if it means taking out a group of innocent bystanders. 
 That's about as much as I can say without giving spoilers. The set up is great but the story is lacking. No massive twists, nothing really unique. 
 I wouldn't recommend this unless you have a good knowledge of the DC universe. This should not be your first step into DC as you will be at a complete loss at who half the characters are. Hell, I was lost on a fair few of them but as I said, I'm not a huge fan. I dip in and out of DC every now and then so I only have a vague patchy idea on the law and character back story. 
 Another big turn off for me is the artwork. It's the reason this has sat on the shelf unread for over a year. I hate the realistic look some artists go for. It turns me off completely. That's my hang up though, just giving you fair warning. 
 3.5/5