What do you people think of this bike? http://www.bikes.com.au/p/289268/2007-diamondback-criterium.html Would you call it an entry level bike? What is the difference between entry level and non entry level road bikes? Is the only difference in speed? What type of bikes do climbers ride (i.e Armstrong)? Are they merely lighter? I don't know much about bikes other than I want a road bike because I have ridden road and mountain bikes before but enjoy a road bike much more. I also much prefer endurance sports. This one caught my eye because of its price and price reduction. What accessories would you recommend? A mud guard is a must I have found but people usually don't put it on their road bikes. Lights would also be a must for night riding. How important are shoes that fit onto the pedals? What about tights? Does wearing an overall make you warmer on cold winter nights?