Things I dislike about the Aeropress:
1 – It starts dripping the moment the water goes in, that part isn't espresso, that's just filter coffee. If you turn it upside down first and putting the filter on last then there is a risk of it becoming loose and coffee everywhere when you flip it over and press. It happened to me a couple of times. And risk of the filter not sit in perfect which means coffee grind in your drink.
2 – It can only make 1 cup at a time. (it's not really 4 espressos as you are not doing to put it between 4 espresso cups and move it along a quarter press each time) Nor are you going to take a sip from a mug and pass it to a friend. Plus, its too big to fit over an espresso cup. Not to mention the coffee is not compacted to begin with.
3 - What it makes sits between espresso and filter coffee, its neither. The "espresso" that the Aeropress makes are not like a real one I can make.
4 – The press doesn't fit under the grinder which means unlike the portafilter where I can put it under the grinder for the dispense of coffee grind, I need another thing to catch the grind and pour into the Aeropress. That's faff.