Zumanity:  Over-rated IMHO.  The Cirque "brand" will always pack 'em in for awhile.  But the promise of being "turned on" by the show to the point where you couldn't wait to get back to your room with your date and rip each other's clothes off?  Meh....although it's possible I'm just jaded.

If you do go, make sure to spring for the sofa seats in front, so you can engage in some naughty play--and bring an extra provider.  Those sofa seats can easily accommodate three or four people-the house doesn't care about the extra people--if you're ok with it, so are they...

Absinthe:  This is a must-see.  It's almost sort of an "anti-Cirque", poking fun at Cirque and other long-running Vegas shows.  It's very intimate, since the show is staged in a simple large tent (again, I recommend springing for the down-in-front VVIP seating, as long as you don't mind the chance of being part of the show--but you get awesome views of the performers).

Meanwhile:  no help for me on Zombie Burlesque, eh.  Oh well, looks like I'm TOFTT.