I bought the Whirlpool Duets 6 years ago when I moved to South Carolina. Water in SC is very expensive and so I wanted to use as little as possible. I have been here in Texas 5 years and we had a small laundry room, so I stacked my washer and dryer and I loved that. We put a freezer in the space where a dryer would normally go.
I love that they are more efficient and use less water. however, I have noticed that they are also gentle on our clothes. The clothes seem to last longer and don't fade as much.
The only negative thing I have about the washer is that the rubber seal can get mold on it. I did some research and whirlpool says to leave the door open after you do the laundry to allow the chamber to dry out. Then, you can close the door. However, since we bought our set, they have upgraded the machines and now have a "wash" cycle strictly for the machine itself to clean the chamber. They also recommend monthly cleaning of the chamber (that's all no big deal, but just something to keep in mind). we recently sold our house and sold the w/d set with it. But, we are planning on buying the same thing again (with the upgraded wash cycle for the chamber). I don't feel like we need the steam cycle, so we are not planning on going for that.
Look on USAppliances.com. They ship to anywhere (often for free) and their prices are lower than the stores.
If you are on a serious budget, you can find used ones on Craigslist.com.
Good luck!
L.