I don't really care for the anime series of either but I'll say I liked Kuroshitsuji's anime adaptation more. If asked which manga series I liked better, well I would still say Kuroshitsuji, but Pandora Hearts works better as a manga in my opinion. It's actually my fifth favorite manga.

I've seen these two animes and in my opinion Pandora Hearts is better than Kuroshitsuji ;)

I was really disappointed at both of the endings, I really wish there could have been a season two with Pandora Hearts, but I liked PH just a little bit more than Kuroshitsuji, I wasn't a huge fan of Kuro's second season also. But they're both awesome. I haven't gotten to far on the manga of both of them so I can't say to much about that.
One thing at made me like PH more is the characters, they're epic. :3

I'm not a huge Black Butler fan got bored after 8 episodes and dropped it. I love Pandora Hearts though the manga at least

I stopped watching PH after episode 2, but that was because I hated subs back when I watched it. I may watch it again later, but right now I don't care too right now.

I've just started this series yesterday I am only 9 episodes in but as of now I like it a lot more than Kuroshitsuji.

Such a difficult decision both are amazing ._. but I'll go with Kuroshitsuji here!

Pandora Hearts is way better than Kuroshitsuji or Black Butler. It has a great storyline, it's actually quite similar to the manga, it actually has developing characters. And the soundtrack is truly amazing. I find Kuroshitsuji highly overrated. I got bored watching the first episode and then finally dropped the series after the third episode, it's not that great. and btw I think they might have stolen a few elements from Pandora Hearts just saying..
And a series with the word shit in the middle can't be good now can it?