I wouldn't switch. A smaller screen would be impractical for what I want a tablet for. Basically, an alternative to my laptop. I use my MacBook as my main machine and don't like the idea of carrying it around all the time, to and from university etc. so my iPad (once I've found a decent case) will cover me for word processing, presentations, small graphic work, portfolio etc.
Now, if I wanted a smaller tablet, I'd probably go for the Nexus 7. Having an Android phone already means I have my apps already. I'd use that for books, games, films etc when travelling. Plus I'm betting it will be cheaper than the iPad 'Mini'. Could be wrong, though.