iPad 2 or iPad Mini?

I currently own an iPad 2, and have since it came out. I love my iPad. I also have a Lumia 920, iPhone 4S and a 2012 MacBook Air. I'm looking for advice on replacing my iPad. I was planning on saving up for a 4th gen iPad, but the iPad mini has me intrigued. I realized today that if I sell my iPad 2 I will have enough for a mini. I can do that or keep waiting until I can afford a 4th gen. My iPad is primarily used for lean-back surfing of the web, reading emails, playing games, etc. My question for you is, is the iPad mini a better experience than the full sized iPad? Does it seem too small, or is the portability worth the trade off?