I think Helvetica would be almost as reviled as Arial if it was the standard on Windows.
I don't think Calibri will be disliked anywhere near as much, being an original, with more of an elegant nod to classic humanist types like Frutiger rather than a passive-aggressive attempt to emulate-but-not-fully.
Haas Unica: the lost successor to Helvetica, no longer available because of licensing issues, but subtly refined by the same foundry after decades of experience with the original in an attempt to create the ultimate sans serif.
http://www.flickr.com/photos/bauldoff/2389110985/
Univers + Helvetica = Unica