all of the FWD cars have the most unrealistic
lift off oversteer like the rears are on Dunlop Groundhogs
But that's what makes them fun..! And quite honestly doesn't feel all that unrealistic to me - lift-off oversteer is the dominant handling trait in any track prepared FWD car surely?
I don't have any of these cars yet, but took a few for a test drive (with locked-in default setup unfortunately) and actually preferred the 2013 cars; the newer cars seem to be scrabbling for grip a lot more, probably because they have a bit more power. If I could change the setup however, I suspect I might improve things. The 2013 set also has the RWD option for those that want it, and is cheaper, so a good choice imho.
I hopped into the KTM too, but couldn't get on with that in my brief test drive. Again, maybe because I could not access the setup options, but it felt a bit odd to me. Still happy to give it a go though.