the stock 19s are probably the best bang for the buck for forged wheels. most people sell the entire 19 tire and wheel package for $2k, which isn't enough to even buy a set of aftermarket forged wheels which usually cost $3k+.
2011 E92 M3 DCT
1991 Spec Miata
2008 E92 M3 DCT - KW Competition 2-way / Brembo 365 BBK / OMP ARS racing seats / rear seats delete / GT4 aero / AiM EVO4 data logger / SmartyCam racing camera
2008 E92 M3 6MT
2008 E92 335xi