It's funny what tanks people like when they come over. I think I personally prefer the first one. Maybe just because it's newer. I try to just do something new with every tank.
They are both gorgeous but I prefer the second tank as well. I don't care for the lowered water level but I understand that some times it's fun to mix it up. But even if it were topped off I still would like the other more. The stumps in the background really make it pop. I have got to put a 3D background on my next tank they really are amazing. You seem to have a knack for aquascapes.