You get what you pay for? *LINK*
Mark Goodall - ATL - tooljunkie
>I've had several, but I've yet to buy one that I really like.
Like Hoa said, the good ones for 15A and 20A aren't cheap.
I've had a few cheaper (under $60) some are okay, some really don't stand up to any serious work. Those have 14G wire and handle 13A which is good for sanders and some things, but not your 15A circular saw or CMS. They aren't the best built (insides) and I've had to open/fix/scrap a couple because the copper contacts aren't up to the task.
I've used some of the $200+ ones at a warehouse and they are built to last.
What I do in my shop is:
I have one 25' 14G 13A one (heaviest duty you can get at HD which isn't saying much) for light tools.
I have some 5'-6' 12G cords hanging from the ceiling for other tools.
I have several 12G and 10G cords varying from 25'-50'-100' on those hefty pnuematic hose reels. They are very handy. You have to keep them unplugged while your unroll/roll them, but it's a good way to keep top quality heavy duty cords organized.
Happy Woodworking!

http://www.harborfreight.com/cpi/ctaf/displayitem.