I'm not an expert by any means, but judging by the look of them, I'd say the Uno.

I actually own an Uno, but it's an Origin 8. Because I've never owned any other fixed gear bike before, I can't say how awesome it is compared to other bikes. My bike is friggin' awesome to me though. Not to go on and on about it, but it also has bullhorn handlebars, which are pretty cool, and it has a flip/flop hub, so I can ride fixed or single speed. I guess it's a little on the heavy side at 24 lbs.; however, this has not been a problem at all for me.

Origin8 Uno