I've been noticing some good lease deals on the Infiniti Q50 this year, and checked edmunds using their lease promise and found this deal. Some dealerships are more expensive than others so definitely YMMV, but it's a good starting point for negotiations with the dealer. I prefer $0 down, so you can get them to roll it in to the monthly payment.
Make sure to filter on the side for lease, and you can sort it by price.
Edmunds Price/Lease Promise Link