I am considering GEM28 for both portability and handling small-to-mid APO for imaging. There are two options to choose between iPolar and AccuAligning polar scope (although GEM28 with polar is not available now). I would like to hear opinions from those who used both, in terms of portability, accuracy, easy of use, etc. One thing I dislike about iPolar is that I have to drag a Windows laptop which wouldn't be fun at remote sites. I prefer Android or iPad App. One concern about polar scope is accuracy, compared to iPolar. What's your recommendation?