Great comparison. Your pros and cons pretty much line up with mine. I've settled on the ScopeCam for my use. It's very versatile and pretty quick. Not as quick as some of the others listed, but better than some I've used. What I really like about it is that I can use it with my binos, my Kowa 554 and my Kowa 883 without issue and they all line up immediately once I mount the phone to them. That and the fact that it's easy and cheap to fit to a new phone when I upgrade every couple of years. It's just a good balance of features, versatility, cost, and weight. The Ollin system looks incredible, but It's phone and optic specific, costs a lot, and doesn't even have my phone as an option. I'm sure it's a pleasure to use, but it isn't quite as versatile as the ScopeCam.