I enjoyed mgq and thought it was pretty solid. It's actually what introduced me to monster girls in the first place a fact I will regret; so many hours wasted. Some parts of it felt neglected, like getting to know the spirits, being almost totally railroaded, and boring combat at many points in the game.
Slowly getting more and more powerful as the game progressed was fun, as was seeing Luka grow more mature throughout the game.
In short, good story, a handful of enjoyable characters we didn't get to know well-enough, like 5% of h-content was okayish and the other 95% was horrible and disgusting.
Ecstacy's NG+ seems to be covering a lot of places the vanilla game left unused, but its progress is painfully slow.