The old rule in real estate is that houses achieve greater capital growth and apartments achieve greater rental returns. This is no longer necessarily true in the bigger cities, where a strong move to apartment living has reduced the growth gap. In other words, either type of property is good.
For most people investing in real estate, the right type of property comes down to your buying budget. If you can afford a house, go for it. In the big cities, land is scarce and you get more terra firma for your investing dollars with a house.