I’m not a fan of surname names but I like [name]Carter[/name] way better than I like [name]Cian[/name] (Which bugs me, both Kee-en and [name]KEEN[/name] are possible pronunciations, which is it and how many people are also going to instinctively know it? Bah, I prefer names with one known pronunciation). But [name]Carter[/name] feels very trendy next to the more clasic [name]Ava[/name].
I also think if you two can’t agree, it’s time to pitch both and look around some more. Here are some other ‘C’ names that I think fit nicely with [name]Ava[/name] but aren’t very common:
[name]Cillian[/name] - kill-ee-an, like [name]Cillian[/name] [name]Murphy[/name].
[name]Colin[/name] - Handsome and in the States, relatively uncommon.
[name]Conor[/name] - More mainstream than you think, I have one across the street from me!
[name]Conan[/name] - O’[name]Brien[/name]'s made this one very pleasant again
[name]Cosmo[/name] - On my own list, it’s a family name for me.
[name]Calvin[/name] - More [name]Calvin[/name] & [name]Hobbes[/name] than Calvinism these days, and [name]Cal[/name] sounds pretty great next to [name]Ava[/name]!
[name]Crispin[/name] -old [name]Saint[/name]'s name.
[name]Clement[/name] - possibly the most attractive “virtue” name for a guy.
[name]Cedric[/name] - [name]Harry[/name] [name]Potter[/name] didn’t hurt this at all, it was played by the guy who went on to be [name]Edward[/name] [name]Cullen[/name].
[name]Cyrus[/name] - [name]Cy[/name] sounds pretty neat next to [name]Ava[/name] too.
Well, that’s about all I can think of at the moment. I hope that helps and maybe something there will strike you as “it”. Good luck!