ETA: Also a Focus isn't a bad idea as Prosthetic pointed out, Fords generally seem to have the best handling in their class... At least the ones we get here do, i.e. the Ka, Fiesta, Focus and Mondeo. In fact at the Nürburgring in 2007 my friend in his 10 year old (but still pretty fast) Impreza 2000 Turbo was completely done between Adenauer-Forst and Metzgesfeld by a Focus S-Max, and that's an MPV/Minivan!
It's the man, not the machine...

Chassis rigidity > outright power.
The new S-Max? Based on the Mark 2 Focus? They don't get the same Focus there as we lucky ones do... but that said, the Mark 1 American Focus, before the utterly useless facelift, is a great car.
If we're considering in that direction, get a Protege5. Utterly gutless engines, but a hoot and a half to drive, very practical, very cheap.
Also, does a 50:50 weight disribution really matter that much in everyday driving? Or only on the track. I can safely say that I won't be taking it to the track, but I will be flying around town
If your everyday driving includes four-wheel drifts around every corner and slaloms, maybe... but, in general, your safety on the road is dependent on the predictability, responsiveness and stability of your car. Most of the cars suggested here meet those criteria.
For everyday driving or even occassional performance driving, the suspension set-up of an automobile plays a major role in a car's handling. Not for nothing does a Honda Fit slalom faster than a Corvette (okay, to be fair, the Fit is some three feet narrower...

)... the suspension tuning of the Fit is fairly sophisticated, despite the 60:40 weight distribution and rear torsion beam axle, it actually handles pretty nicely.
Now compare that to a Toyota Yaris. Even shorter wheelbase, same weight distribution, same suspension set-up... yet it handles like a cow patty. You've got to really wring its neck to get some involvement, and even then, it's still... meh.
I wouldn't concern myself with weight distribution. Most of these cars would put a smile on your face, and would keep you alive on the road, as long as you drive soberly.
