Chris, great review.
I was just telling one of my flying buddies at the field today that I needed a meter. I have a balancing charger, but it only shows percentages and I know it is wrong sometimes (0% on some cells - I think it isn't accurate under 45-50%). I'm sort of in the blind on my batteries right now, and it is time for one!
Another flying buddy gave me a Thunder Power 3s 2200 mah battery (perfect for my Sensei). The included adapter solves that problem for me!
I think I'll pull the trigger on this one.