I'm in Ireland so neither are popular here, however the popularity of Florence in England does put me off a bit as I want something not too popular (I'm weird like that).
I love Fleur dh prefers Florence, Flora has been shelved atm due to the margarine connection. Ds is Eli. I love the nn Flo and Florrie and would use them for either name (I know they are not usually nn for Fleur but I don't give a toss
)
There shouldn't be any pronounciation problems with Fleur here with our accent.
So advice please, my dh is ready to pull his hair out over my obsession with baby names, I don't think I will ever pick a girls name!