CLK63 AMG BLACKSERIES和BMW M6,还有PORSCHE 的911 GT3比，哪个好呢？

CLK AMG:
year: 2006
Horse Power @ RPM: 514@6800
0-60 time: 4.4 sec.
Top Speed: 155 mph
Displacement: 6208 Cc
Torque @ RPM: 5200
Engine: 6.3 liter V8
Transmission: 7-Speed Tronic

M6:year: 2007
price: $96795
Horse Power @ RPM: 500@7750
MPG(Cty): 18
Curb Weight: 3909 lbs.
0-60 time: 4.5 sec.
Top Speed: 155 mph
post your top speed
Displacement: 4999 Cc
Torque @ RPM: 6100
Transmission: 7-Speed manual
MPG(Hwy): 12

911GT3:
year: 2007
price: $106000
Horse Power @ RPM: 415@7600
MPG(Cty): 26
Curb Weight: 3053 lbs.
0-60 time: 4.3 sec.
Top Speed: 192 mph
post your top speed
Torque @ RPM: 6300
Transmission: 6-Speed Manual
0-100 time: 9.2 sec.
MPG(Hwy): 17