The upside to either the Note 2, Galaxy S3 or 4, is expandable memory. I have a 16 GB Galaxy S3, with 16 GB SD card. My SD card is mainly for music, wallpaper and backup files, while the internal memory is for apps and anything else that is small (mainly sound files that I have set for notifications, cause if they are on the SD card and you remove it, notifications revert to default) The touch sensitivity is very good for the S3, so I don't think you will miss the SPen on the S4. However, I think the S4 is capable of supporting the SPen (Don't quote me on that).
Now, which ever Android device you choose, and don't let peer pressure have you go back to Apple you have very good reasons for switching, you can download a launcher from Play, like Nova, ADW, or GO. I love Nova, it lets you change the grid layout for the home and app drawer, color themes, animation for scrolling, dock icons, dock pages and more. Oh, by the way what I listed was the free version, and you don't have to be rooted.
There are many threads and posts about people who are getting bored of the 'stale' and 'same old thing' on iPhones. And honestly, in my opinion, I highly doubt that the iPhone 5S will have a change in screen size, due to the 3S and 4S made no such changes.
Thanks for your input! I *think* I'm going to go with the S4.. with my iPhone I didn't have a stylus, so maybe I really won't need it, right? but if i could use an spen on the S4 that would be super cool.. will have to look into it..
Plus I have my iPad with Stylus should I need to write/draw etc with it.. the better screen quality of the S4 and the camera and faster processor is what is really appealing to me.. however I know for a fact I will not use group play because I think that group play is only with people that have S4's and I'll be the only one (like i mentioned my husband, and whole family and most of my friends have iPhones - except for like 3 that have other androids)..
My husband is actually intrigued by the S4 after I showed him the demo someone posted elsewhere on it.. i'm hoping I can convert him too and if he gets it after me.. then his friends and our family will totally switch