I have been trying to build an online lunch ordering site for a client,and after 4 weeks I dont think i can pull it off with zen.I did 4 weeks of shopping cart research and Zen is the only one I would trust.Here are 2 examples of the style of cart I would need to create:

artizanfood.ie (if you specify a delivery time,you will be brought to food ordering area)
and

zuppler.com/Trooper/restauran...ospizzaii/menu


any advice would be greatly appreciated