CM10.2 has been the best for me. But I would like something with more customisations. I'm recently trying PA multi window. Seems OK so far but I'm thinking of going back to CM 10.2.
As for the other ROMs: cromi is good at first but since it is based on stock it starts to develop lag issues, CM11 is kinda buggy as of now, Omni is plain and simple so it doesn't have any customizations other that the multiwindow stuff which is kinda buggy as well with some force closes, CMB is a good ROM if you like the "dark side" lol but it has the same issues as CM11, and PAC is a great ROM unfortunately the AOKP side of the ROM is what causes issues so it ends up having force closes.
I assume you are new to this tablet, so I hope this helps.
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