I am going to pick up an iPad 2 on Friday. I didn't get gen 1. I have done a lot of research on some of the options for photographers. Photogene, Photo fx ultra, and Filterstorm all seem to be well regarded apps. Do any of these, or any other apps offer flagging, and sorting a la Lightroom? Ideally, when I import into lightroom it would bring in my flags and ratings. I don't want to edit on my iPad (some basic stuff would be nice), but I really just want to begin sorting and flagging while in the field. I have read some of the open letters from developers of photographic software like lightroom, and photo mechanic about why they haven't brought apps to the ipad yet. But like I said, i really just want to flag and rate.