In reply to crayefish:
The use of tunnels in Antarctica, yes they are good but remember teams usually dig them in reducing the overall profile to the wind, particularly side on, and outwith of the coastal ranges the wind is often steady and the ground means it’s easy to orientate pitch direction to that wind. In the UK you won’t be able to reduce the profile and the site may dictate how the tent is pitched which may not align with the wind.
Tunnels are very noisy in winds, particularly gusty/squally variable ones, to the extent I’ve had several friends with hillebergs give up on occasions and try sleep in thier cars.
Yes they are good and yes they provide excellent space to weight and yes the large porch would be good to have with a dog. But if that dog is a light sleeper the OP might be better with something that flaps less……having a tighter fly; like a quasar.
I did like a previous UKC posters critic of Hilleberg as for ‘deaf, rich, dwarfs’!
Horses for courses and all that