We visited Sam dunes and hered about khuri dunes. We choose mama resosrts for activities. Khuri dunes in my opinion are best in jaiselmer. If you are in jaiselmer and wanted to enjoy dunes khuri is the place to be. Mama resosrts was a good choice we booked camel and camel cart ride. One can take vehicle till the dunes. Dunes are bigger and untouched compared to sam.