For more than 50 years, Corvettes have combined very powerful engines, such as the Z06's LS7 and the big block 572 and also affordability, especially when compared with more prestigious marques of similar performance. Older generations of the Corvette have been criticized for being crude and lacking in refinement by European sports car standards, and their on-limit handling is a divisive issue garnering both praise and reproach. Recent generations of the Corvette, however, are widely seen as being much improved in these areas.