The Detroit Grand Prix will be taking place very soon here and I want to rent a telephoto lens for that week. Spend a few days prior getting used to it (since I've only ever used my stocker 18-55) and then go apeshit when the races are going on. http://www.rentglass.com/shop.aspx?type=Canon There's so many and outright buying one is not in the equation right now with tuition, books and moving out on my own so rental seems to be the way to go. I wouldn't have much time to put it to use once school starts anyways so there's no point in straining my budget to buy one at the time. What do you fellas think would do just fine for that occasion?