I recently purchased an Equinox and absolutely love it. I'm glad I got the v6, because it is perfect when you need that boost of speed. I currently get 19.8 mpg driving 90% city and 10% highway. This is because I coast a lot of the time when I see a red light. I think eventually it might hit 19 mpg, but I'm not really looking for good gas mileage since I drive maybe 100 miles a week.
Love the blue-tooth, you can talk to your car to call someone. Sunroof and heated seats are also great features.
The biggest flaw is probably the transmission, sometimes it pauses for a couple of seconds to up-shift.