I have both sets and would defintely recommend the house as the better set for a child to play with. With the different rooms, the garage, car and loads of different accessories, there is more variety there.
The Kwik E Mart is an excellent set to build too but for play, the items on the shelves and the fridges are fairly similar and not much play potential with them really.
Although there is probably more variety in parts for the Kwik-E-Mart for future builds compared to the house.
So all in all, I'd recommend the house, especially since the Kwik-E-Mart will be available longer so you might still be able to get that next year.
