My wife and I are going to be in NYC for a couple days - just a blitz trip through since we'll be on the east coast for a friend's wedding. It'll be my first time there, and I'm 99% sure my GX1 will be what accompanies me (had briefly considered renting some interesting body or other). I use the 17mm f2.8 for most things these days, but I'm thinking something a little bit wider would be better for my vaguely-artful trip photos. Thing is, the trip has put a damper on my available cash for the time being. What would you guys suggest? Especially given some of you have no doubt snapped many a photo in that fair city. I'm mainly thinking of renting a lens, although I might swing a less expensive option to add to my motley array.