How to spell Isa/o/bel/le

[EmmyCat]

My daughter's name will be Faith and her middle name will be Isa/obel.
Faith Isobel or Faith Isabel?
Which one do you prefer and which one sounds the best?
We don't like Isabelle with it and Isobelle was ruled out recently.

Her older siblings are Leo Duncan, Sophie Gemma and Beatrice Laura.
Please choose and say why.

I like the Scottish Isobel most of all, just how it looks, oddly enough. Isabel is fine, too (though I like the latinised Isabella more). Both from Elizabeth as we all know. Isabelle I don't like and I'm glad you've decided against. Usage more modern, but that is not the reason why I dislike.

I like Isobel best.
I know an Izobel which I hate!

Isabel, I think. Although I have a strong preference for both Isabel and Isobel over Isabelle.

Isabel - because that's my spelling excellent name choice!