Given that the trailers are box shaped (otherwise comparable) the one better to tow will be short versus tall, and the Floor will be lower. In fact, shorter height but longer length will still be better than the tall one.
Crosswinds are what turn TT over. They’re NOT comparable to other trailer types UNLESS these other types have the high floor, tall roof and extended sail area.
Best upgrade are torsion axles. Independent suspension with far better roll center height. Can much more easily deal with road surface problems as have much more wheel travel. Better ride, too. Should be standard.
As to 4WD versus 2WD, if the latter has IFS plus rack & pinion steering, it will be the better TV. As it’s likely lower in ground height, that much more so. Will have lower operating and ownership costs, and quite likely a better turning radius. MPG also better and ride quality.
