The level 9 sweeping lens is awesome

I would, but too busy using the ward trinket so I can see ganks.

And the green/yellow one, if more people bought it. :/

i always place a pink ward somewhere, no matter the lane im in

Fun fact, you usually can't kill more than one ward with one sweeping lens use unless you're someone that's building attack speed or Leona. If I find two wards with the regular lens as Nami then I can't kill both wards before the lens ends, and if I'm sweeping a large area of the map with the upgraded lens then the same thing happens because of how spaced wards usually are. The upgraded lens is only really worth a buy if it's late game when you're running around with your team, early and mid it's not worth the gold.

As a support main, upgrading my sweeping trinket comes toward the end of my core build an I have found it very beneficial to have. Nothing like denying your opponents vision an then they walk into that unwarded bush ... BAM smack in the face.

I love the upgraded trinkets, but I have a bad habit of prioritizing them too low or just forgetting to buy the upgrade.

To be fair, I have a habit of doing the same with boots. I caught myself once 35 minutes into a game and wondering why everyone was always outrunning me - which was, of course, because I hadn't even bought T1 boots yet.