It truly is a lovely manga in many ways - interesting enough concept, and the art is visually stunning. And of course, plenty of male eyecandy for the ladies.
The only thing I'm not keen on, is the regular up and down between silly chapters and serious chapters.
One moment you will have something a bit more childlike, fluffy, or pointless (Easter Egg Hunt, The Whodunnit mystery scenerio, the Curry Arc, the servants making a mess of things again etc) that I don't find particularly interesting and often interupts too frequently. Then the next moment, you will have something more straightforward, deep, dark, unique, with the offer of twists. But then after that the themes will switch again.
And don't get me wrong about the Mystery chapter. I love mystery, from Agatha Christie to Doyle, but the whole bunch-of-guests-are-at-a-fancy-mansion-dinner-party-then-someone-dies-everyone-is-a-suspect has been done to death.
And don't get me wrong again, I definitely enjoy humour, but I like it better within the more complex scenerios. Or within a more natural way, instead of inserted into more googoogaga scenes.
Another thing: While the author does a reasonable job offering historical information, there are some tiny mistakes. For example: Little girls would not be going to balls until they would reach an appropriate age (Usually 18), gentlemen would not be wearing hats indoors, and ladies only wear hats indoors until teatime.
This is a very minor complaint on an obviously fictionalized world, but it's just that for a series that promotes the Victorian themed style, it would be nice if the proper historical etiquette would be involved here and there, since readers can get the wrong - often glorified- concept of 19th century life.
I'm also not crazy about the recent chapters going on of Ciel going to that school. There are tons and tons of manga out there that takes place in a Highschool/Private school setting, something which I'm weary of, so I gave a tiny bit of a groan that there was going to be a school segment in this series. With, of course, the additional new gorgeous typical mysterious bishounen boys (Something that I'm also getting a wee bit tired of) I will hope though, that something more will come out of it.
So overall it works out like a hit or miss. It can be either amazing or a bit of plummet. Sometimes it offers, sometimes it lacks. Sometimes it feels like it is going somewhere, sometimes it goes to a completely other direction. Sometimes the characters are great and complex, sometimes they feel cliched or you just want to slap them in the face.
But, to consider it altogether, it is a solid quality series. Definitely try a go if you are a possible new reader, since there would likely be something that will interest you.
*Note. The Manga is much better than the anime.