Alright, well, my experience with Korora has been… mixed. When I first went to download the distribution, I noticed there were a multitude of versions. I decided to try out the KDE one since it has been a little since I last tested Plasma 5. This turned out to be a poor choice, not becuase of Plasma, but for a couple of reasons. First, Korora was a little sluggish in my testing, despite allocating 4 GiB of RAM and 4 cores to it. Now, I've gotten much better responsiveness from KDE on way less in the past.
After installing the system, I noticed that VirtualBox guest additions were not installed by default. This isn't a big deal, though a little odd for a distro painting itself as being more user-friendly. I figured I would handle whatever updates were available and then install guest additions. To my surprise, there were almost 1100 updates
that needed to be installed. Holy shit. As it turns out, my root partition (9 gig, I figured it would be enough for testing) was not big enough for all of them. After scratching and trying again with an 11 gig root partition with the same results, I became very frustrated. Even on my daily driver that I have been running since January, the root partition has only used 11.2 GB. There was also an abundance of redundant software in Korora, including three different package manager frontends and three different web browsers.
At this point I almost gave up, but I decided to give it one last go. I downloaded the MATE version of Korora instead and installed it on the same 11 gig partition. This one was MUCH better. Still no Virtualbox guest additions, but also much less redundant software, and the still rediculous over 800 updates installed smoothly, as well as said additions. It has been running pretty smoothly since. I still do not think it is the most responsive distribution (Fedora and Fedora base have always seemed a bit heavy to me), but it does do what it says on the tin: makes Fedora prettier and slightly less autistic. Personally, I prefer having .deb compatibility, so I think I'll have to pass on it.
As a conclusion, things were rocky, but ended up alright. In general, I think they need to update their installation media more. Maybe they update the direct downloads and not the torrents, but it was still not a very fun beginning. I would also recommend they drop some of their official flavors. If KDE is going to get the same love as MATE, then they should drop it, or let it get picked up as a community edition in the same way that Manjaro handles things. If I had to rate it, I would give it a 6/10. MATE did the job well enough once I tried it, but the abysmal KDE flavor plus the old installation media really left a bad taste in my mouth.
PS on AntiX: Remember, it's a beta, so it may be less stable. Also, when you use the live session, select the option for "virtualbox video." this doesn't add virtualbox additions to the live session, but it will make sure they are there once you install.