I really like Foundation based on the same points you raised.
It does support IE8, minus the responsive stuff, it's < IE8 that it doesn't (http://foundation.zurb.com/docs/support.php), and that's a deal breaker for me and why I've never used it since most of the sites I build still get around 10-12% from IE7.
You could use the older version of Foundation, but that doesn't appeal to me either.