Soldato
Thanks for clearing that up. Think the 8-150w seems the best for future proofing.
Future-proof is generally a great way of saying not Future-proof. The US-8-60W isn't an expensive switch (£110-ish) and the US-8-150W is almost double the price (£200-ish).
So you could buy 2 US-8-60W and get more ports for roughly the same money later and less money now. Or, you could just bite the bullet and buy a US-16-150W.
In my experience it's better to buy for what you want today. Then, if you need to upgrade, it's really easy to sell your old Unifi parts and buy a newer, bigger/faster/shinier, one.
Plus the US-8-150W is the one everyone says is the least reliable of all the Unifi switches....