60x60cm single plant best light?

Hiya
I've used my basic qb288 for 3 grows which has been great, im getting 1.5g/w but something that bothers me is the buds are incredibly dry with absolutely minimal trichomes, which i guess affects potency.
So I'm considering upgrading. I can DIY and im happy to go down the meuji/kingbrite route.
Any suggestions?
Ta

Ok, sounds more like a genetics issue than a light issue. 3 grows, same strain?
No, trichome density doesn't effect potency, it determines potency, fewer trichomes equates to a lower thc content i.e. weak ass buds.