spelling question - which would you use?

[horatiopants.livejournal.com]

My partner and I are having a spelling debate on a name for our soon-to-be-born baby. 

Clio, or Cleo? It would be pronounced KLEE-oh. 

Argument for Clio: more traditional spelling
Argument for Cleo: more common US spelling

For what it's worth, initials would be CMP and the last name is eastern European. We both have pretty well-mixed heritages. 

ETA: We live in the US

Comments

[hermione-vader.livejournal.com]

I'd say Cleo, mainly because I think of it as a nickname for Cleopatra before I think of the muse, so the "e" looks "right" to me.