I went with a dark rock slim for my i-5 10400 and I love it to death. Mainly I got it because I had already decided to get bequiet case fans, and I wanted as many fans as possible to be by the same manufacturer to minimize potential clashing fan sounds. (I wasn’t impressed by what I read about bequiet PSUs, though, so there I stuck with Seasonic. My only non-bequiet fan.)
The only downside to bequiet fans and coolers is that possibly-insane dude on Amazon who left long, highly rated reviews talking about how bequiet fan noise will literally drive you insane. Something about low frequency sound. It was unsettling to read, but as @Jophiel helpfully pointed out at the time, if my case fans did start driving me insane, changing case fans is simple enough. (EDIT: Link to old SDMB post where I quoted it.)
Note that you can get black noctua coolers now Instead of their signature brown, but of course the rat bastards make you pay $10 more for them. I considered going noctua instead of bequiet but the latter was cheaper for three fans and a cooler.