Long time cyclist relatively new to snow/ice cycling. I've commuted in cold weather but snow and ice always kept me off the bike, but that's lame. So I'm going to get a cheap but decent used bike and do a little work on it to make it suitable for winter commuting. One big question 700c or 26"? Just to be clear I'm not referring to a road bike I'm thinking hybrid or 29er with widish tires. Thanks!