PC2 Most Realistic-Feeling Cars in PC2?

In many discussions here on RD, a common complaint about PC2 is that the "quality" between cars is all over the map.

There are so many cars in PC2 that I don't have the time to try them all. So, I'm asking which car(s) do you feel provide the best (ie - most realistic) driving/racing experience out-of-the-box?

Not trying to start a p---ing contest, so let's keep it civil, please. It's OK to have different opinions.

I really like the feel of the Touring Cars class, particularly the rear wheel drive BMW. Try them on some of the tighter tracks, such as Sonoma. Great racing!