Tough choice! We have LOVED both. Hoop Dee Doo is a riot. Plain and simple. If you want a hootin, hollerin fun time, then Hoop Dee Doo. If you want a surreal show, and want to be wowed, then La Nouba.
Your kids are at an age where they would really like both I think. The 15 and 12 year old would really appreciate La Nouba, and
maybe the 8 year old too. Of course, you know your kids better than anyone and know what they would appreciate. Hoop Dee Doo is fun for all ages. ...but if you don't like slapstick comedy, or a western venue then you might choose La Nouba instead. There is a LOT of crowd interaction with Hoop Dee Doo. Having the beer and Sangria included in the price was a real plus too!
I will say, having done both, if I had to go back and do one over again it would probably be Hoop Dee Doo. Part of that was for personal reasons, though, since my parents were with us on that trip and it made for such a fun time for all of us.
Dan