My Z is a 2010 7AT and as for a DD it's perfectly fine for me. Gas milage is around 21-22mpg so it's comparable/better than most other cars in it's class. In terms of storage, aside from moving a house, you have all the space you
need for day to day stuff, grocery runs, etc. Obviously if you're moving anything large,
practicality suggest you'd use a different vehicle, so assuming you're as intelligent as the next guy thats a no brainer. Comfort is fine, I preferred the AT so as for DD and highway traffic, no clutch = happy driver. But that's just me.