
The North Face
Wawona 6
Spacious vestibule, strong in storms, but rainfly tricky solo.

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Like you, I had a Coleman pop-up for 12 years with no issues. I am also worried about the quality now. I got the Blackberry Skylodge and the poles snapped. It was an awesome tent tho, the bug doors were so nice. I didn't like the T4 for the reasons I mentioned. I now do not have a tent and no clue what to do.
Honestly, I considering getting the same tent. I am just worried about reports that it is not the same quality because it is more money. It was a main pole. I was folding it, like I have done a 1000 times and it snapped.
I've got a similar issue. I've got 2-3 tents that I've narrowed down to but haven't pulled the trigger. For size, it really depends on if you want lounging space inside. A 3-4 person tent is good for two adults with gear inside. If you want to set up chairs inside then a 6 person would be better. With a 4yr old you might even be able to get away with a 4 person but a 6 person would allow for growth. Coleman and Kelty have a lot of nice tents that would be fine for what you want. A Skydome with the screen room has the vestibule for a reasonable price. Not to mention being a darkroom tent so you're not having to wake up at first light. Something like the Coleman Skylodge would allow you to walk around inside. If you want to use cots then bigger might be better. I went solo camping with a 4per dome and my cot took up most of the space. There's no chance to fit a second one in there for sure.
I've used 4,6,8 man Coleman Instant Tents for years. Goes up in about 3 minutes, comes down in about 8 minutes (you have to roll it and smash it back in the carrying bag.
Coleman 4p instant tent. I have one and it's great, just a little heavy.
My Coleman instant up 4p (the basic one, not even the fancy version) faced a couple (probably more) of storms with no drama. No leaking or failed zip after 2 years and at least 60 nights spent in there. A good tarp underneath and a proper peg set and you will be more than fine.
I have had the Coleman Instant Up 4p for over 6 years now, camping in Victoria in all seasons approximately 10 times a year, and it's been fantastic. Have copped torrential rain, storms and extremely windy weather and it remains sturdy and waterproof. Mine is the regular version, not the dark room - I prefer waking up to natural light also. It is still in great condition after so many years. Recommend!

The North Face
Wawona 6
Spacious vestibule, strong in storms, but rainfly tricky solo.

Gazelle Tents
T4 Hub Tent Series
Fastest setup, durable, but bulky and awkward door.

Durston
X-Mid 2
Ultralight, spacious 2P, but not for very strong winds.

Durston
X-Mid 1
Budget ultralight 1P, spacious, but large footprint.

Naturehike
Mongar 2 Backpack Tent (Nylon)
Budget 2P, spacious for price, but not for 4 seasons.

Ranked #1
Durston - X-Mid 2

Ranked #1
Gazelle Tents - T4 Hub Tent Series

Ranked #1
Gazelle Tents - T4 Hub Tent Series

Ranked #1
Durston - X-Mid 2

Ranked #1
The North Face - Wawona 6

Ranked #1
SlingFin - Portal 2