So we've probably all tried out at least some of the new weapons now, and most of us probably went for or found different ones, so I want to hear everyone's opinion.
Here is what I've tried so far:
Atomizer
I'm almost positive this is going to become a complete and total replacement for default bat when people aren't using Sandman, the bat is certainly useful in some situaiton but I think the utility of a third jump wins out. The fact that the damage penalty is really minimal doesn't hurt either.
Quick-Fix
I really like this Medigun, but it's still no replacement for the default. This is more for the side Medic, a lot like how a Gunslinger Engie isn't going to go out on his own on defense. It's extremely useful for keeping your team at full health, though it's a bit hard to break the old habit of just sticking on someone.
I think the Uber effect is going to be paired up A LOT with the regular Uber once people figure out how potent an Uber can be again when a Pyro isn't flinging it up in the air.
Tomislav
As much as I like this gun's design I can't say I'm a fan of it when it comes to my style of Heavy play. I like to stick to the front lines and push the battle forward and this gun is much more suited to a solo Heavy wandering around on his own. Head on you can really feel that 20% decrease, but in one on one I think the spin-up time makes up for it, especially if you can take them by suprise.
Also, it spins up almost instantly and is quite as shit until you fire it. I'd be surprised if the spin-up doesn't get nerfed to 50% or lower.