Pete, I think you made the right decision. When various hubs are weighed, come to find out that for the same weight, you could have quite a few more feet of pole.
As for 'igloos', assume from your other thread that you mean cross pole domes.
Before you settle on one of those, please consider the double cross pole domes.
The one on your German link is too skinny to benefit from the design. Better examples of the design are those used for bug tents, like the REI Bug Hut, and WE Bug Dome.
If the design is not arced to much - and you don't need too much arc to get plenty of headroom inside - it can be much more taut, rigid and wind resistant than the single cross-pole domes. I did a little thread called XX Tarp Tent, or something like that, that you can find on Search BPL. It is a very rigid canopy, much moreso than any single cross dome I've ever seen, and you don't have to use a lot of little triangles with curved sides to get the canopy shape - just one big, long rectangle does it. The pole crossing points must be raised to get the best out of the design, and that can be done simply by having shock cord attached to a reinforced patch on the inner canopy where you want the poles to cross. A loop of shock cord slipped through and over a ball lock tightener will snug up around the pole crossing and keep it elevated. Maybe a strip of velcro pile glued around the poles also at the crossing point to create more friction. The only catch is that silnylon or the like must be used for the canopy, as cuben and sailcloth are too inelastic to conform to the dome shape. Just some food for thought.