I own a MMr and it's the favorite game in my collection. The Hobbit didn't play well for me initially, but the more games played, the more it grew on me. Although it's not as intricate as WOZ, the fun factor combined with the modern cpu based strategies make it a must have too.
The best solution is to get both. However, if you can afford only one, either one will be an excellent choice. I lean to the MMr by a small margin.