Not sure about it being more practical than a tourer.
What often gets overlooked when people talk about boot capacity is the shape of the storage. Something like the 3GT is great if you carry stuff that can be moulded to fit with the sloping tail gate. For me there is nothing more practical than a tourer/estate or even a hatchback. I'm not sure why this is but i often find myself transporting large boxy things (not always in boxes) which is partly why I found my e90 so frustrating. Big boot capacity but not enough height.
Daily Golf R
Project Peugeot 205 1.6 GTi