A family tent is judged on a different night than a backpacking tent. It is judged on the night you arrive later than planned, in the rain, with tired children in the car. That is when setup speed stops being a convenience feature and becomes the whole product.
The second judgment comes at 3am when the rain arrives properly. This is where partial rainflies fail: a cap over the roof is fine for dew and useless when wind drives rain against a door. On a two-person tent that is uncomfortable. On a six-person tent with a family inside it is the end of the trip.
Everything else — cabin walls versus dome, room dividers, electrical port flaps — is preference. Setup speed and fly coverage are not.
Choosing a family tent
Rate it at minus two
A six-person tent sleeps four people plus their gear comfortably. An eight sleeps five or six. The rating measures floor area with adults laid shoulder to shoulder, and nobody actually camps that way — least of all a family with duffel bags.
Cabin walls versus dome
Cabin tents have near-vertical walls and much more usable interior volume — you can stand up, which changes how the tent feels far more than square footage. They also catch wind badly. Dome tents shed wind well and waste the space near the walls. For a sheltered campground, cabin. For anywhere exposed, dome.
Setup: instant, quick or classic
Instant tents have pre-attached telescoping poles and genuinely go up in about a minute, at the cost of significant weight and pack size. Quick-setup tents like the Skydome pre-attach some poles for a five-minute pitch. Classic dome tents are ten to fifteen minutes and pack smallest. Buy for the arrival you actually have.
Check the footprint against the pad
Eight-person tents are large objects and plenty of campground pads will not take one. Measure the tent's footprint and check the site dimensions before you commit — arriving with a tent that does not fit is a specific and avoidable misery.
Two doors are worth more than they sound
A single-door tent means somebody climbs over sleeping people every time anyone gets up in the night. With children that is several times a night.
How these were picked
I haven't handled these. Here's what I did instead.
Everyone in this category says they tested twenty of these. I haven't tested any, and I say so. What I do instead: read the manufacturer's manual and published specification, compile the numbers that decide the purchase, do the arithmetic in the open, check the live price, and name one product to skip. The scores above are judgments from that research against a published rubric — they are not measurements I took, because I do not have a lab and I am not going to pretend otherwise.