one big thing to consider is how easily you can set it up/take it down. i found out during the killpecker run that i could never use a standard fold over tent because i'm not tall enough to be able to deal with the cover, fold it down and fold it back up.
get a used maggi.. you can find them for about $1500-1700 and they don't really lose they're value.
i could set up in 2 minutes where it took treeroot 1/2 hour to 45 minutes. granted, he did have the vestibule, but even without, it still took a long time. teardown for me was 5 minutes. treeroot was still close to the same time.
after three days when we rolled in for fuel, the guys with the soft tents were on empty, i had a 1/4 tank. i've found no mileage loss at all.
ige tlca #1431