Just from the little bit of research that I've done on the Dirigo, it's hard to ascertain whether or not condensation would be a big issue. The panels at both the head and foot are a breathable material (I believe it's eVent or a DCF/eVent hybrid), and coupled with the two mesh doors/wall panels, it appears like it should breathe/ventilate pretty well, hard sayin' not knowin'. As far as the doors go, if it was raining, it looks like opening them any more than about 3/4 of the way up would allow water to run directly down into the bathtub floor (although probably not too big of an issue, unless it was raining really hard).
That Hille Akto is very nice no doubt, but at 4 lbs. all in, it's not exactly ultra light, especially since it's only a one man tent. Regarding the price point, yeah, $800 is pretty steep and the only defense to that price point is the fact that DCF material alone is very expensive. If I were seriously considering this tent, and I could wait until Nov., HMG has 20% off sales on all their gear then.