Daphne - don't like it. Old lady-ish but not pretty imo
Darcy - Quite like this but possibly only because one of my best friends used it and her child is adorable. Prefer it spelt Darcey too.
Isla - Love it. Beautiful name.
Ivy - It's ok
Aisling - not keen.
Names he likes:
Chelsea - I actually quite like the sound of it but not all the associations that go with it so I'd rule it out for pure snobbery's sake I'm afraid!!
Sierra (like the bloody car!) - don't like it
Connie - quite sweet but not very adult. Constance?
Sadie - Really like it, very pretty.
I'd go for Isla or Sadie and don't actually view those two names as being in totally different camps (unlike Sierra and Daphne!!). Names I see as being in the same vein as Isla or Sadie:
Ariel, Ayla, Ava, Amy, Anna, Bella, Bonnie, Bethany, Ciara, Cassie, Callie, Cara, Cora, Daisy, Dana, Ella, Eva, Evie, Erin, Elsa, Elsie, Esme, Edith, Freya, Faith, Flora, Grace, Hannah, Hollie, Heidi, Hope, Iris, Iona, India, Julia, Kyra, Kyla, Lily, Lucy, Leah, Lyla, Lyra, Lexie, Molly, Mia, Maya, Macey, Maddie, Nina, Nadia, Nyah, Nia, Orla, Poppy, Ruby, Rosie, Rosa, Sara, Seren, Sienna, Sophie, Skye, Tara, Zia, Zara, Zoe.