I only followed Hell's Paradise, Loving Yamada, and Raeliana. Out of those three the one I've been looking forward to the most each week has definitely been Loving Yamada. Which is surprising since I thought it would be Hell's Paradise because I enjoyed the manga so much a couple of years ago...
I think your wife would like Yamada-kun. I enjoy a good romance and this has been one of my favourite shows of the season. I find all the characters pretty endearing and the romance aspect is pretty good and focuses on the initial "starting to like each other" phase of the relationship.