I will be visiting NYC in August and have a block of time I'm looking to fill with (maybe) a tour. I will need to start and end in Midtown, and I will have from about 8-9am until noon. I'm not looking for anything specific, but I don't 'need' to see the Statue of Liberty, the Empire State Building, Ground Zero - I've already done all that during a previous visit, but I'm not opposed to checking them out again, either. Any help would be appreciated, there are so many tour companies and options I have no idea where else to start! I'm also open to non-tour options for that time slot, but I was thinking a tour may allow me to see the most in the least amount of time.