Does anybody ride with either of these packs on a road bike? If so, which do you like better, and why? i'm looking to get one of them since i go through way more than two water bottles on a 40mi ride. I'd also be interested to hear of any other brands that you like that come in <$50 and hold at least 2L (70oz). I've seen the MULE, but it's like $80 and out of my price range. Thanks.