Hi Arch Enemy,
What do you mean by "more than 4 USB Ports", do you mean 4 usb ports built into the case or just over four in total because this would depend on the number on the case and the number on your motherboard. But you could always use a USB hub to have more.
Antec does great cases, my case can be seen in my sig below. It has good airflow and cost me about £60 although its more of a gaming enthusiast case than a general case, and fairly large.
What form factor is your motherboard because it may not fit in all cases

. If your not sure just post the make and model and I'll look it up
