Its not surprise that english is winning even though no one knows how to write a word the first time they heart it because english is like a teenager girl in her days, is so voluble is confusing (This only aplies to the spoken part, writing is significantly easier)

I feel like English is the most expressive and open to change, and of course I'm better at speaking English than any other language.

In terms of sound, however, I think French and especially Italian sound far smoother.

How is the spoken part confusing?

Portuguese. One of the most complex languages out there. It's so hardcore:

Pneumoultramicrooscopicosílicovulcanoconiose. Or try this one:

Acentuação muito mais complexa que 90% das línguas. Funções gramaticais dolorosas, etc.

*função retenção carniça consequência reticências café pé aziágo"

I only speak two languages, Arabic and English, so I can't judge the others. For me, my favorite is Arabic.

Its grammar system is much more sophisticated, and exceptions to grammatical rules are very rare.
Vocabulary is far richer. Not to mention, many words can have dozens of different forms.
Spelling actually makes sense 99% of the time, unlike English.

I am going to say German. English is too rough.

Gesundheit!

I like the way hebraic sounds, I don't know why. Never been to Israel either or met someone speaking it.

As for flowing, you can't beat either georgian or brazilian portuguese. Portuguese from portugal is just rough and rushed. Imagine this:

classy lady from london = brazilian portuguese
street hobo from queens = portugal's portuguese
Blond with great boobs with an angel voice = georgian
A german guy singing merry xmas = hebraic

If you think that's bad, you should listen to Italian Americans speak English.  What's written and what is spoken are often two completely different things.