I just use regular ski goggles. Never had an issue with fogging, but I don't wear glasses under them.
I would suggest arranging the balaclava in a way where your breath isn't being trapped up into the goggle area- basically be sure that your breath is escaping through your facial layer.
"Start and end at a brewery, and a very cool snow and Ice urban/cross country, lake ride in between with flasks ful of Krakin... YAH MON!!!!" - Vibrato
"Every one of you should ride a bike and be yourself. I really and truly believe that bikes make the world better, and that anyone who spends some time getting used to life on the saddle will find that it makes their life and the world that their life is locked to, better; in almost every way." -Gern Blanston, Surly Bikes