Works great. Have the old one as well and I like the interface on this one better. Also as noted by others, much faster! The one thing Im not sure of - can the file size be adjusted? Seems in the frame settings there is a S, M, L setting etc. but Im not sure if that refers to file size. Pro photographers want to know the size of the file they are saving - some of us still make prints! And a tiff option would be nice.
9ef453 about Pro HDR X, v1.1