Like you I own an acer c720 but the celeron one with 4gb of ram, i have to be honest this thing is fast, I mean really fast.

I use it for university mostly, but also at home, i mean in 7 secs you got your browser opened and ready to start typing, I can't ask more than that.

When it comes to more complicated stuff I use crouton with elementaryOS, seriously this is the perfect machine for me for everyday usage, chromeOS for note taking and web browsing, elementaryOS for the rest.