I know nada about that "new" Comet kit....
The Pz III ausf A will be an all-new NEW tool kit for Bronco, as they have not ever released a Pz III kit of any sort before (at least not that I know of!

), and no one has ever put out a 1/35 Pz III A in styrene... So it just has to be a new-tool thing, right?

In any case, this one is for ME!
That "new" sWs w/ 2cm flakvierling 38" is, I am sure, a re-box of the Great Wall kit. As I understand it, those GW sWs kits are (were) pretty nice renditions of some versions of this vehicle type(which is why I have one - armored, w/ the 3.7cm FlaK 43 - in my stash), so, I would expect that this Bronco offering will be a pretty good kit. I'll probably pass on this one, just as I have on its original version. Still, IF GW is no longer going to produce these sWs kits, I'm glad to see someone else will continue them.
Now, if y'all will please excuse me.... I'll go tend to my increasing drool and slobber mess as I salivate with anticipation of that Pz III A!
Bob