The other seals....
I ended up going with my third choice (as seen below) after trying these two alternatives out first
The reasons? I dig the Enterprise as much (ok, probably a lot more) than just about anyone, but nobody takes ST Geeks seriously. Nobody. So I tried out the 'atom' symbol instead, and while I liked it, it makes me look like I'm into atomic physics, etc. - which (though very very cool stuff) isn't the case.
The other problem is the motto - (latin for 'doubt everything') - which is in and of itself OK, the problem comes with its origin. Seems that the motto originates with one Karl Marx - and for me that's a deal breaker. And so, I keep trying to find a better fit.