The main difference between the two is geography (location), and that includes the LANGUAGE you will use every day. One is English exclusively, whereas the other is a mix (English/Italian). It's always worth learning new languages though, even if it's looks/sounds completely odd to you. To be...

Interesting take re quitting. At the end of the day, everyone serves their own interests so if you are not happy with your current team/employer for whatever reason, just pull the plug and leave (at the right time, of course). You can't please everyone, so take the dive and do it professionally...