If Kaz is not available, QuickNick would be my choice.
If Nick is available, I still prefer him over Kaz.Nick had one bad season so far but a string of very good ones before 08, so there's no reason to think he won't find his form again...anyway, I don't think BMW will let him away as long as there's no better option available for them atm.
Another Bob Dylan's masterpiece on the way, check NPR.org