My husband will be participating in a Century Ride (100 mile bicycle ride) as a fundraiser the first week of June in Lake Tahoe. I am very excited to be able to tag along. I am considering purchasing one more lens for this trip, but I'm not sure what I will need. I would like to eventually add both a wide angle and telephoto zoom to my collection, but can only pick one at this time. I have been looking at the Sigma 10-20mm and the Nikkor 70-300mm VR. Considering the other lenses I own (well, the Tamron is still in transit), which one do you think I would find more useful for this trip? I'm pretty sure I have the range needed for shots of my husband in the ride covered with either the Tamron or the kit lens, but we'll hopefully have one free day to explore/hike. Thanks in advance!