whole wheat chocolate donuts

So the idea of a "healthier" donut is pretty exciting huh?
I've seen lots of them here, but I wanted to try my hand at my own version.
And these are not too shabby tasting, really. I'm not exactly sold that they are the next big thing to run Krispy Kreme out of business... they are a work in progress. But with a few minor changes to this recipe, I'd say they're a good starting point.
What about you?
Anybody out there had great success with a whole wheat baked donut?
Specifically, I want it to be sweet enough, but not too sweet... and not have the faint whole wheat taste that I love in an oatmeal raisin cookie, but can do without in a donut.