I bought a BlackBerry PlayBook a few years ago, and it's only in the last 18 months I've stopped using it.
I was then lucky enough to win an Apple iPad Air 2 two months ago, and all I seem to do with it is look at The Register when my phone isn't around or dead.
Against this backdrop, I bought a ThinkPad T500 for portable computing, and I have used that every day without fail. I also purchased an Asus Transformerbook T100 last year and that gets used when I need something with longer battery life.
To me, Tablets are good for quick internet browsing and playing the odd touch based game. You can't seriously use it as a replacement for a laptop. I've got "development tools" on the iPad and they're awful, I've used word processors on it and they're painful to use.