Whats a good leasing Deal on a 2010 Mazda 3 ?

Well, just looking at numbers, you will end up paying $272 more going with option 2, if it is also for 36 months. The mileage limit seems kind of low, unless you don't plan on driving it every day, and for short distances. A typical lease should be at least for 12,000 mi, better for 15,000.