has a good video
explaining the differences.
For poa, I think monument, revolver, and katana are the most effective. Katana is cheaper in cost per application. Dismiss can have a pre-em effect on sedges with broadcast applications. Quicksilver will go after moss, can be used really early after seeding, and helps with fast burn down of weeds.
Off the top of my head, if I was to start over for post-emergents, I probably would have purchased a three way, glyphosate, and then katana or revolver. I don't know if I would have bothered with Celsius. The primary upside of Celsius in my eyes is that it's temp friendly, controls a lot, and works with pretty much every warm season grass. With that being said, I have Celsius, Three-way, Certanity, Monument, Image, Glyphosate, Princep, and don't regret purchasing any of them. The Certainty isn't used often but that's because it did a great, and very cost effective, job at controlling my sedges.