Have you gone from Retina iPad to iPad Mini? Why did you and what was your experience?

I'm an iPad 4 owner currently. I just recently started working in the city so I no longer drive on my commute. I take mass transit which allows me to be on my tablet on the way to do my reading, youtube-ing and web browsing. Those are my major functions with a tablet. I'm getting a little annoyed at the weight and bulk of the iPad 4. I love everything about it except how uncomfortable it has been to carry it on my walks to and from the bus stop, and have therfore began considering trading for a Mini. Has anyone made this switch for this reason and how has your experience been? What do you suggest? Should I make the trade or wait until the iPad 5 releases, hoping it is much lighter?