For the last 2 years, I have been a constant Swype user. Tried SwiftKey, SlideIt and other keyboards, but always went back to Swype because of how simple and fast it was to "type" with one hand. I even did a comparison on my blog between Swype and SwiftKey awhile back.
But for the last 4 weeks, I have given SwiftKey a dedicated, full on, trial and have found it to work very well. I even enabled Swype again, and after a few days switched back to SwiftKey.
My biggest gripe with Swype is lack of keyboard themes. I do not think the default is terrible looking by any means, but it needs some options. That, and it needs to have an official release. It should not stay beta forever.
I still believe that they are the two best options for any Android user and cannot recommend one over the other. I feel it is up to the user to try them both out and find what works best for them.