I've converted a few "Marriott Men" who always stayed at CY to Hilton based solely on HGI. My biggest gripe at the CY level is the inability to know what room amenities you are going to get.

The beds can take some getting used to; I've found for best results not to be on the bed when adjusting the dials. Some do seem to get "stuck" ... I think it was a good idea, but perhaps the system can't support the usage level.