It is the GLE AMG 43 BTW and I just had one as a loaner for 2 days while my 2012 ML350 BT was being serviced. I drove it a lot and all I can say is it was an awesome ride and drive. I did not experience any instability in taking on curves. It felt very flat footed and stable and it was like riding in a luxury tank. Just starting the engine and listening to it was awesome. It was the first AMG I ever drove and I really hated giving it up.