I've had a proper machine in the past and, to my (admittedly unrefined) taste-buds, the gap in quality of coffee between that and what the Aldi pod machine serves up is small. The mess, time, cleanup and ease of use gap is much larger.
I guess I am quite lucky though in the sense that I basically use it as my instant coffee - if I want a nice one I only have to walk 50m down the road and there are ~15 highly rated cafes within a stones throw of each other. If good coffee is harder to come by in your neighbourhood, then I can definitely see the advantage of having a proper roasting set up.
So basically if you live in The Hills, then you should probably get a coffee roaster. Or move out of The Hills.