The drop-off, in the instances where it does exist, is not nearly as dramatic as advertised. It's pretty small, really, which has me looking at switching my tablet from iPad to an Android tablet as well.
Plus, on Android, I have a browser with functioning plug-ins (Firefox). iOS's app ecosystem doesn't seem so great when it fails so dramatically at perhaps the most important app: web browser.
The problem with Android isn't the OS, it's the stupid number of hardware configurations possible that make fine-tuning the application to the screen virtually impossible. Most applications, even the best, are still rough around the edges compared to their iOS counterparts.
If you want tweaking and customizing, Android is the only way to go.