I looked at them a few years back, but then we built a house, so my money went there.
As Crazy Horse said, they are heavy, I spoke to a guy one day that had the double slide version. The actual weight was 800 pounds more than what the sticker read. He went to the scales before picking up the camper then went from the camper dealer to the scales again, he emphasized he had no water, food, clothes, guns, dogs, he went straight to the scales.
Aside from the ones Crazy Horse mentioned also look at Snowriver (U. S. ) Snowbird (Canada) I believe the web site is snowbirdcamper.com.
steve