vestibule didnt fit, kampa were useless till i threatened to pitch it outside their head office with a sign on, suffered terribly with condensation no matter what we left unzipped.
when i say terribly, i had to go and buy a window cleaning squeegee for the inside of the tent...
We have the Hayling 6 Air Classic (2018?) and it's brilliant. With the extension and vestibule it's a huge tent with so much room.
I don't know the Broadlands but we have had an Outwell previously. I would say better quality than Kampa but more expensive, but ours didn't have any extension options so we switch to the Kampa. I'm surprised the price is the other way round for the tents you are considering.
Don't forget to leave a review of all tents you've used, for a chance to win fantastic prizes