What you want is in one of these two styles
the belt heads will be around $1000 less, perfect for very light duty stuff, best if you can find one with a solid column instead of a rotating column since it's very unlikely you'll be machining anything that requires you to turn the head.
geared head machines are surprisingly tough and durable, more expensive but provide more torque and fast speed changes.
Belt head would be best for you since in aluminum and other non ferrous materials you'll generally always be at maximum rpm to do all your cutting.
