Go for a Z rack. They're much more expensive, but they also wont collapse under the weight of your winter coat collection. Totally worth the investment if you want the rack to last more than a year!

The ikea rigga one is horrible- i have it and it's very rickety and wobbly. I'd opt for a more professional one like the kind clothing show-rooms have that are collapsable.

I'd recommend the container store ones. I had an apartment without closets for three years and I bought a couple from them and turned an unused hallway into a closet. they held up very nicely under tons of clothes.

Go for the professional ones, worth the money and they can collapse to fit under a bed.

You can also find plastic covers for them, too. Good for out of season clothes.