So I'm hoping to install a new toilet in my bathroom. I'm not looking to spend an outrageous sum of money but I would like to buy something that saves water. I am planning on buying a Caroma toilet, as the one in my other bathroom has worked out well.

This time however, I am unsure of whether to go with another Caravelle toilet (fairly standard size/shape) or whether I should be adventurous and go for the Invisi series Cube which is wall-hung. I like the cube one better cause it's sleeker and looks good, but I have never installed a wall-hung toilet. Would it be significantly more difficult?

This is the toilet:

http://www.caromausa.com/products/index/cu_products97.php