Havana was annoying, but I personally love the game otherwise. I'm probably the biggest K&L supporter in the world, because I own it on 2 systems (PC and X360 - yes, I actually bought both, that's how dedicated I am!).
Really though, I thought it was a really fun / good game, had a decent story, admist all the swearing - I just didn't like the ending. I thought it had alot of great mechanics, and was just overall anew experience, unlike most games now-a-days, which is the same crap. This was new, refreshing.
I also did not have a problem with aiming, I don't see why everyone else does - on either version, mind you.
The multiplayer, if people are actually still playing, was also very good. Bank robberies online, with the option to kill your team at anytime to steal their loot, is great - or even, bribing the cops and leaving them some of the loot, just so you don't die. The opportunities are endless really when it comes to how a heist will come out online. You might all work together, or maybe you'll have one turn after another.. heck, you can probably even pull a TDK, except substitute the bus for a van.