DEFINITELY HDDR!!
We did Hoop Dee Doo our first year, and loooved it. Immediately thought "we must do this every year!"
The second time we thought, "Well, we really should try something new," and booked the Luau. MISTAKE. I had read many warning reviews, and ignored them figuring it couldn't be that bad, could it? It was. Food was not good at all, service was the worst we have ever had on Disney property, the show was dull and mechanical (the skit stuff really was cheesy, and not in the "Disney is a little cheesy and it's still good" kind of way).
By contrast, Hoop Dee Doo has great food, the service was quick and good, bottomless drinks were brought promptly (at Luau, I got one, and never got them to return to give me another), the show was cheesy in the BEST way--we were singing along and the tune was happily in our heads for a long time after. And on this trip we are treating friends to the experience so they can enjoy the memory, too!