The most user friendly responsive theme.

Hi
I’m still hesitating which theme to choose. Can you recommend one that’s slick, stable, easy to configure, yet with many options. I have made a decision to stick to responsive themes as they seem to cooperate better with my android as well, I assume ?? Of course the theme must be compatible with WordPress 3.5 !
One thing bothers me still – sooner or later you switch between themes with a natural desire to experiment. The sad thing is inevitable loss of widget and some other configuration – I’ve heard that WP 3.5 has sorted it out – is that true ? There’s also a light in the tunnel – Widget Saver Plugin. Is it worth its proud name ?