I shall be going to Miami on Friday and having to decide what camera/s to take . I should really bite the bullet and take the M with a back up but now I have the Sony 7R it's become a harder choice. I would probably be very happy with my RX1 as back up knowing it has the 35mm covered but I'm worried in case I mess up with the focusing/exposure using the M and regret relying on it in which case I should take the 7R and it's two native lenses and my 50mm summilux (I now have a 25mm Zeiss Biogon too but it's also a completely unknown quantity to me! This is keeping me awake at night! I'm looking on this trip as a do or die for the M as it'll be the first time I'll have some decent light to try it in since I got it in October, at the moment I'm not totally committed but when I look at my flickr page I see some nice pictures that I'm happy with and this keeps me coming back to it.