The way I see it, you got a lot of choices when it comes to coffee.
The aeropress is unmatched in its ability to provide a single cup of great tasting coffee, with basically zero cleanup and in as little time as it takes you to boil some water and brew. Everyone should have an aeropress.
Having said that, buying any kind of decent french press will provide you with the ability to make much more coffee, and coffee with a much earthier taste. I don't use the french press nearly as often as the aeropress, but I feel it gives you greater control over the taste of your coffee.
Thirdly, and this is an odd choice, but I really enjoy pot brewed coffee. It's slow, and bulky, and the coffee doesn't taste nearly as good as either of the above options. But if you want to make a lot of coffee with as little effort as humanly possible, all you need to do is pour in a few cups of ground beans, fill it up with water, and wait five minutes for it to brew. You end up with a competent pot of coffee, which you can leave on the heating plate for a few hours, and come back to multiple times and still get a reasonable cup with no additional work.
Finally, you could get an espresso machine, although in my opinion, you're better off just buying a cappuccino from your nearest cafe. The quality difference between consumer grade espresso machines ($200-400) and commercial ($1000+) is incredibly noticeable, and in general I only use my cheapo espresso machine when I want to make a milk dessert (caramel lattes, or some kind of mocha abomination).
In summary, buy an aeropress for $60 or whatever and a burr grinder for $200 or so. You'll never look back.
