I went with the Groupon deal about a year ago, and I was extremely disappointed. The food was good, but not worth the 150 they advertise. On top of the 75 you pay for the certificate they want you to pay tax and 18% tip on 150. When I challenged them on this, and asked to see a full menu with prices on it they refused to show it to me.
When I came home I looked up their prices on menupages and determined that I would have basically paid the same amount without the groupon deal.