I would like to rent a car in the USA from beginning of September for approximately 1 week. I would like to rent it in Niagara and give it back in New York. Where should i look for cheap opportunities? I know the major rental car companies, but maybe there is a local advice for something cheaper.
I suggest http://www.3clickcarhire.com/
I tend to avoid having to rent cars, but the few times I have, I found these guys to be the cheapest. They source car hires from multiple providers and, consistently, for me, have been cheaper than renting with the individual providers themselves.