I don't regret buying the iPad. It's served me well and is still fine for watching Podcasts and checking email. But with iOS 5, it's now woefully underpowered RAM-wise. I should have stuck with iOS 4 because the additional features don't outweigh the performance hit.
I'm leaning toward the N10 because I just don't see enough value in the Apple ecosystem to justify the hefty price premium. I have an iMac and a MacBook Air, but when I needed a new phone, I went with another Android because all of the iCloud stuff can be done cross-platform just as well with Dropbox, Evernote, Google Calendar, etc.