I've been back and forth for months now on which my best choice for a good all purpose walk around lens would be. I take mostly wildlife, old buildings, old gravestones, some sunrise/sunsets....basically everything. I do like some zoom on it, but already have a 70-300, so don't need too much. I'm using a T2i with the 18-55 kit and ready to upgrade. I'd appreciate any help on this.