What, where, when are you using it? And what is your definition of lightweight?
I’ve the Laser comp and have slept two in it but it’s a squeeze and it helps if you are friends 😆 It’s fine for a night or two but after a few nights in a Scottish gale you’ll wish you had something bigger.
I’ve also a Vango 2p tent, can’t remember the model now but I don’t think they make it any longer, split between two it’s not a problem carrying it. Lots more room than the Laser and with a huge vestibule. I think it’s 2Kg +/- a couple of hundred grammes.
Watch out for those tents where they’ve saved weight by using a superlight material for the groundsheet – you’ll need to factor in a protection mat to both cost and weight.
It’s surprising just how well some of the non-specialist tents stand up to things. We camped on Pabbay (uninhabited island at southern end of the Outer Hebrides) for a week. Half the week was sunny and calm, the other half was a storm. One of the tents was one of the big Go-Outdoors frame tents – it stood up to it no problem.