Also from a Commonwealth nation and I prefer the -er spelling. It looks more balanced, take the word center as an example, it plain looks nicer, and having a vo

Also from a Commonwealth nation and I prefer the -er spelling. It looks more balanced, take the word center as an example, it plain looks nicer, and having a vowel flow onto a consonant for a hard ending means the spelling matches the actual pronunciation. I think centre at first glance would suggest a more French pronunciation - "cen-tray". That said, I'll never forgive American English for what it did to Aluminium. The word Aluminium just sparkles and glitters like the metal itself, whereas Aluminum has a distinctly cold sound, like an echo in an empty hall early on a winter's morning.