These "Ask So-and-so" type threads exist in other forums and it seems helpful some of the time so I thought I would inflict this on @Sixty Fiver since he seems to be one of the most experienced frequent posters here. If that's not okay then say so and we'll have one of the mods lock the thread.
At any rate, here is my question to start it off: I'm considering winter bike options and I'm debating about what size wheel would be best. It seems like a 29er would be the most able to get over the snow but I'm mostly concerned about riding over icy roads and studded tires seem to be more available and cheaper at 700c or 26 inch. Do you think it is worth it to go with a 29er?