I would offer two items - 1) concrete will not seperate and become "upset" the way pavers can in a freeze-thaw cylce, 2) you will never have to use the weedeater over the concrete, and 3) if you are looking for anything besides perfectly straight lines, the concrete is much easier to manipulate.

You could also have the concrete colored and stamped or textured to look like brick, slate, cobblestone, etc.. for about the same price.

Regards,

Todd Schneider

Actually, that would be more than two items in the pro-concrete column....sorry!

Todd

Todd is right, even just an overlay over the existing concrete would be much cheaper than redoing the whole thing. - When you begin stamping overlays, it can get costly, but if you are happy with just the look of concrete, it will be much easier and cheaper to put a topping over the exisiting.