I'll be at Cosmo next weekend and would like to get a shave and a head-shave. Is there any reason NOT to just book the in-house salon? I tend to be a spendthrift in Vegas (more than willing to spend more than two bits) so price isn't an issue. Is there a place where the experience, or shave, or whatever, will be good enough to outweigh the convenience/comfort of staying on site? Many thanks.