Throwing this out. The Black Diamond Eldorado is one of the best sheep hunting tents ever made. Is it the lightest? Probably not. Is it the cheapest. No on that count either. But it will keep going through more damaging weather than nearly every other tent and I highly recommend it.
This tent is 20 years old and while it has a fixed rip in the floor and a new zipper from Apocalypse Design. It continues to perform. I am likely to get a green one as a second tent soon.
Blast from the past!
My 2 cents. While the Eldo and I-Tent were revolutionary in their time, the Toddtex fabric is old technology at this point and there are far better options for lightweight tents that offer a lot more space and functionality that the Eldo/I.
These tents basically have no room for gear inside the if it is occupied by two normal sized humans. To have any sort of dry gear storage or a place to set up a stove out of the rain, you have to add the optional vestibule, which puts the packed weight around 7lbs. Near double some of the better choices out there.
The soft backed Toddtex fabric is a sponge that takes a long time to dry out after it has been saturated. Goodness forbid that you get stuck in it for multiple days in below freezing temps. The end result will be a stiff, frozen tent that will take up your entire pack if you can get it crammed in. It will weigh a couple of more pounds as well. Ask me how I know.
Ventilation is challenging on these tents as well, especially in buggy country as they don't have a bug screen (at least mine don't), just a solid fabric door, and only two small vents at the top of the tent. It turns into a sauna when it is sunny out.
I will say that the poles are burly and if you properly guy these tents out, they are surprisingly solid for the super simple two pole design.
With the internal pole design, these tents are also tough to pitch in windy, rainy, snowy conditions without totally soaking and trashing the inside of the tent. Models like the MH AC2 or MSR Advance Pro with external pole sleeves are a better choice in a much lighter package. BDs Firstlite tents came in behind the Eldo/I and were all the rage for a while for fast and light alpine ascents. They are not durable or waterproof for very long though and not suitable for extended wet, windy weather.
In, at one point, 20 years ago I would have agreed with you. These were fantastic tents and revolutionary in their day. That day has long passed.