How long is your commute? Do you want to ride in rain, or only in pleasant weather? Do you want to do this year-round, or just for the summer? Will you ride during the dark?
There is nothing particularly wrong with any of the bikes you mention (although I have never heard of the Davinci). But for a short sunny commute, you could commute on a child's BMX and not have too awful a time with it. For longer rides, you want to think road bike rather than hybrid; for all-weather commuting, you want to pick a bike that can take full fenders. Also, buy from a good bike shop, not from Wal-Mart or Target or a similar box store.