A few weeks ago I got the use the Nikon 24-70 AFS 2.8 zoom lens during a wedding. I fell in love with it no, not with the bride, but with the lens :-o !!
In the past i worked with a prime 50 and a 24 wich is fine if you don't mind switching lenses from time 2 time but in confined spaces there's not always the possibility to move around so when you can't zoom with your feet you have to seek another solution, never thought I'd buy this lens as I'm sure it's way OVERPRICED but anyway I have one!
picture taken with my smartphone in auto mode "lol"