I pretty much only use DBs these days and I almost never go over 100# and NEVER go over 120#. I do experiment from time to time with the movement, more ROM, different rep tempos, hand position (neutral grip, etc). But when I starting something new, I stick to the 80's or 90's. Gal is right that the setup and end can be the "oh shit" moment. If it gets out of control, I just dump.
Been doing a lot of weighted dips and pushups combos instead.
I LOL when I see that I have the whole PL'er setup too for bench: Westside bar, chains, cambered bar. And I still like DBs.