I used to use a cheap Proteam rail, but like other reviewers I found it held only the lightest of weight in clothing and after only six months in use became so loose it had to be propped against a wall or else it fell over. This was much easier to assemble, with a very neat system that really does need no tools (though I warn you, you need a fair bit of space and it helps to have an assistant to hold one end when you are attaching the second side strut). It took me five minutes altogether, and I have severe arthritis in my back and hands. It seems very sturdy, and there are no plastic parts. On the down side I can say only that on my old one I could store shoeboxes along the bottom rail, but this one does not really allow for anything much to be placed on it. That's a major consideration in a house as small as mine. But it seems able to take enough weight that I could hang a shoestore on it instead, so I'm not too unhappy. It rolls well on the castors, too. We'll see how it holds up under a few months of use, but for ease of assembly and general quality, I'd rate this highly.
Update August 3 2011; after more than twelve months of continuous and heavy use, it is still in perfect condition, not a wobble nor a twitch anywhere. Excellent.