For me, the only, and most frustrating car to drive is the Mercedes SLR McLaren in GT6, tuned to the specs of 1300kg & 550bhp for a racing series in team Mercedes partnered with the SLS as my teammate, full aero, wing, the lot, and honestly I'm a very good driver.
As I was competing in this racing series, the understeer was unbarable, it took me over 4 months of fine tuning to eliminate most of the understeer, but would never be like the other cars within that racing series my god, tuning it was very hard, and driving it was even more annoying, too much understeer, with such little to resolve it because there is next to no front downforce, in fact I genuinely belive the front of the car has lift, though nonetheless, I was still able to set the fastest laps, barely, with a struggling car.
As good looking as it may be, and even though it had a top speed advantage in the racing series, it was totally not my style of car, I regret joining team Mercedes, but I can't turn back.
My suited style of handling is extreme oversteer, especially terminal oversteer, but I can control it in the fact that I need no countersteer, that is where I can by far be at my fastest, I could care less about straight line speed, I ONLY care about corneirng capability, hance why some of you here may have seen me on Nurb lobbies driving s*** cars, and destroying everyone just by cornering hahaha!