It is an interesting question: what's a mother to do? A good sub is hugely important but I suspect the light will shine once you implement the speakers you have chosen in your room, and it will become clear what the next best step should be (absolutely save up for a decent sub). If you have the cash, buy everything all at once, and if you only have credit please stimulate our economy, please please, we're drowning, aaaaah!

"If you try to turn toward it, you go against it."