A Frabil trekker DLX from Gander Mnt.
OR
A Frabil trekker from anyplace else
The DLX has nicer/heavier fabric cover, removable/replaceable windows and a additional door in the back of the shanty.
Two man flip over with comfortable flip up boat seats that are independnetly mounted.
They slide side to side and can be removed/installed in 3 seconds.
Take one out if going solo, drop 13 lbs from the shanty and have loads of room to yourself.
Leave it in for two people and have enough room to comfortably fish.
Not loads of room for two people but enough to fish 2 holes each and have heater/electronics on the ice.
I wouldn't want anything bigger since I hand drag.