SwiftKey is my *favorite* keyboard, I love how smart it is... but I don't use it. I am a fan of swiping, and have been using Swype Beta on my N7.
In anticipation of the 4.2 keyboard I switched back to SwiftKey for the last week or so just to give it a shot... and I remembered why I loved it so much, but again, I prefer to swipe.
I've been rolling with the 4.2 android keyboard since I got it to see how it is, and I guess I am just spoiled by my other two keyboards, but I am not a huge fan of it. I love how it looks, and the glide works great... there are just a few "creature comforts" that I have grown used to and now prefer. I plan on giving it a fair shot though, as I would not mind uninstalling a couple keyboard apps if the stock keyboard is sufficient for me.
P.S. I am really looking forward to the SwiftKey update that includes swiping... I am fairly certain that will become my go-to keyboard instantly.