I used Swype for many months, if not longer. But SwiftKey is just much better. I bought it many months ago, and it's ability to predict the next word I am going to type is uncanny. It also allows the same "Swipe" ability to type, and it is configurable (for example, I like having a permanent row of numbers at the top of my keyboard, instead of having it be an alternative key, or having to call up a separate number keyboard. So that's what I use. I have toyed with the idea of the numbers on a side keypad, but this is what I prefer.
If you like to type with two thumbs, even occasionally, in addition to the "swipe," it's a no-brainer.
Here's an article from Time yesterday on the best keyboard becoming free:
http://time.com/2857057/swiftkey-free/
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