That's because there is no right answer. Everyone skis differently and everyone has different shaped feet. There are lots of different boots and none of them are perfect, especially if your sharing a set up with someone.
Before I read this thread, if you want to stay rtp, I would have said look at the reflex system cos your more sure that both feet come out. With 1 foot in you risk to twist your ankle which is what happen to me and it was 6 months till full recovery. I moved to double animals which ive been on for 2 years and they are great for skiing but I have never released and I've tweaked my ankle a couple of times as its much more suceptible after the 1st accident so I'm now looking at the reflex rstyle system.
If you want to go double boot most people seem to love the stradas and say that release is good as long as you don't tighten the top strap too much but it's expensive. Changing to double boot is very strange at first and your always going to paying more as you need 2 boots.
There is no perfect option, there is alway a risk!