I plan to get a D80 soon and I want to get the best combo of lenses up to 300mm. I shoot year-round, but my two big events are the Chicago Auto Show and football games in the fall. My seats are 4th row endzone Been looking at compact zoom 28-300 lenses since that would give the widest range. I could get a close shot when the play is in my endzone or I could zoom when the play is between the 50 and my endzone. What are the downsides to having a 28-300? I see a Sigma for sale on eBay BIN for $239 and Tamron BIN for $329. Is the Tamron worth the + $90? I know I’ll need an additional lense wider than 28-300 for shooting cars, but I won't have to worry about that until next January. I currently have a 100-300 AF lense for Nikon that locked up on me last year at a baseball game. It will soon be off for repairs and I will sell it if I get the 28-300. My other two options are to keep the 100-300 and get a D80 with a 18-55mm or an 18-135. Summary of my options: 1) Keep the 100-300 and buy a D80 with the kit 18-55 2) Keep the 100-300 and buy a D80 with a 18-135 3) Sell the 100-300 and buy 28-300 plus a wider lense later. I appreciate any and all of your .02. Thank you OT!