Sorry but the GRD IV is staying, it is my I have a camera with me all the time unit, sits in my travel briefcase just waiting to jump into action. I have to admit there are times when I am photo lazy when I travel, been there too many times, will be to busy, these are the times I do not bring my X100, M4/3 or whatever camera with me, but the GRD is always there just in case I get inspired. The X10 might have pushed the GRD out but it's packed size it just a little too big, so it will sit in my in-town brief case for basically the same purpose. I know this all sounds a bit nuts but it works for me I keep my travel stuff always ready to go separate but equal to the in town stuff. The are just too many last minute trips when I get busy.