My cousins name is
Annabelle Catherine, she'll be 7 in October. I really, really like Annabel/le, and I think the combo is very nice. As for the other combos, I don't think they really flow that well, but
Annabel Olivia is my 2nd favourite.
If you search the names you can click on Popularity, and see.
Annabel was 848 in the US for 2006, while
Annabelle was 206. I wouldn't call either ranking too popular- and popularity shouldn't stop you using a name you love anyway.
here's a pic of my
Annabelle :)
Shot with Canon DIGITAL IXUS 50. at 2007-02-12