No one has mentioned this yet but it's a little winter trick I learned from my DH and it's FREE. For keeping your toes warmer, you can tear off a piece of a plastic grocery bag, wrap it around your toes (over your socks) and then put your foot into your normal cycling shoes. I usually use the corners of the bag for a more toe-shaped solution. One reason I really like this trick (besides how cheap it is) is that the plastic is very thin and once you get it right it doesn't affect the fit of the shoe. For me, wearing thicker socks, etc has always been a problem because it makes my shoes tighter, thus cutting off circulation and leading to numb feet. The only downside is obviously it is not that breathable but if it's only a 2 hour or less ride that doesn't really matter. I've never tried it on a ride longer than that. Give it a shot.