assistance with comparison of Nikon d5100 and Sony a65

Good points. The mirror sucks light and light is what most of us want instead of 10 fps with continuous auto focus. And i have read posts by prs who say they were never impeded by 4 fps.

But all manufacturers, i think, are going to be playing with this technology to assist video quality.

And, you are right about the hgher price poinnt of the a65 buying some tech that is not on the 5100. I like the sony bundle of features, but i do have questions about quality, commitment, support long term.
Thanks