Awe! Isn't that sweet?
I like this time of year because there are so many different ways of greeting someone, and I think I variously use all of them:
Happy New Year!
Leshana tova! [Ashke-Sfard pronunciation]
Shana tova u-metuka!
Leshone tove! [American-Ashkenazic, i.e. stress on the penultimate syllable]
A gut [zis, gebentsht, . . .] yor!
Leshone toyve [tikoseyvu]!
Add your own that I've forgotten, in this blog's famously rowdy and hyperactive comments section.