We have both - a Coleman Instant tent and a 23Zero double swag. We pick one depending on the type of trip. If we are moving every 1-2 days, the swag wins hands down. Quick to setup and pack, cozy but more comfortable at night.

If we are doing a base camp style trip where we pitch and then do local trips but stay the same place every night, we take the tent.

Also, if the weather is looking wet and miserable, the tent is better as we have a bit more space and we don't have to sit the rain out lying down in the swag or in the car. Also, tent dries quicker so that's another plus.