I was a regular at LVH until three years ago. They were giving me good offers, assigned me a host, and, as a Hilton gold member, I could always get upgrades. In fact, I usually requested one specific room and almost always got it. Then I noticed something strange: The more I played, the less I got. First they took away my host and then they downgraded the offers to the point where they weren't even worth considering. At the same time, I noticed a negative change in their inventory, with old machines replacing newer ones, and fewer machines overall. So I quit going and switched to a combination of GVR, RR, and M for the past few years, all of which I'm very satisfied with.
This year, my offers from LVH have improved, actually somewhat even better than in the past. A friend of mine stayed there recently and told me that the machine inventory had improved. (But she wasn't very happy with the room as they gave her one with a Murphy bed!) So I thought I would check out LVH again, and called the "VIP line" to make reservations for July. Not only would they not take a request for a particular room, they wouldn't even take a request (not a guarantee, mind you, just a request) for a room type (i.e. non-smoking, particular tower, etc.). So I called a host (randomly selected), and left a message asking if she could help me. I never heard back. I then emailed my host at GVR and received a confirmation within an hour, including the type of room and the tower I wanted.
LVH used to be a great place, but, IMHO, it's gotten progressively worse since Hilton sold it. As of this month, I think, they've stopped all cash back. Yes, they have some good VP, but so do all 3 of the places I now frequent, and the accommodations, restaurants, and perks at RR, GVR, and M are much better than LVH, in my opinion. But most of all, I'm convinced that LVH really doesn't care about its customers. Unless that changes, I'll not be going back.