[prmoustache]

I think it also depend if you only use it to sync and share files or if you want to use the included web apps.

But to be honest office 365 also struggle at times when using the web version of the office tools. Last week I had to do reporting on a small excel document with 4 sheets, the biggest one having less than 30 lines and 6 column and every time I had to insert a line it took 5 to 10 seconds for that line to appear and the whole excel web app was unresponsive until it appeared.