Both nice, slight preference for Louise.
Tbh I'm a bit bored of vowel heavy names. All of these are currently in the Top 100: Ella, Luna, Lucy, Lily, Layla, Elsie, Luna, Lottie, Lyla, Eleanor, Ellie, Lara, Leah, Ariella, Arabella. And lots more like Millie, Bella, Talia, Isla, Hallie Amelia etc. It seems as though every other girl name had L's in it, or begins with an L or E.