Is the Hegel H-20 better than the Parasound A-21?

The Hegel H-20 amp costs $3400.00 more than the Parasound A-21 amp. Is it worth the extra cost? It appears that both Bent Holter and John Curl are formidable circuit designers.
Especially John Curl who pioneered and developed the amplifier measuring system back in the 70's which has become the standard globally for bench testing amp's. Just curious if the sound quality is on par between the two amps.