Just got my July copy of Car & Driver and they have a 3 way comparison article of the 911 Turbo - GTR - M3 and they picked the M3 over the GTR.
A very brief summary of the Highs - Lows - and Verdict
911 Turbo
Highs = Sucker pucnhing turbos, sterring perfection, sports-car feel and manners, craftsmanship pervades every corner
Lows = Sticker shock, not as trackworthy as the GTR, tiny trunk, clunky shifter and clutch feel, floor mats cost extra
Verdict - Costs nearly as much as an M3 and a GTR, you could almost buy 2 standard 911s instead
GT-R
Highs = Heroic launch control, nearly lag-free turbo motor, balanced chassis, quick-witted all wheel drive, hides its 3900 pounds (well most of the time)
Lows = Excessive road noise, strange transmission clunks, rough one-to-two shift, can feel too wide, heavy and big
Verdict = Nissan aims for Ferrari and hits somewhere between an M3 and 911
M3
Highs = The direct connection between man and machine, vice-free handling, feathery feel, grammy-worthy engine, day-to-day likability
Lows = Not as quick ast the two other cars, somewhat light and numb steering, that stinking iDrive
Verdict = Every other manufacturer should give up on building their own cars and just make M3s instead
And a few stats:
0 - 60
911 = 3.5
GT-R = 3.6
M3 = 4.4
1/4 Mile
911 = 11.8 @ 120
GT-R = 12.1 @ 115
M3 = 12.9 @ 111
A very brief summary of the Highs - Lows - and Verdict
911 Turbo
Highs = Sucker pucnhing turbos, sterring perfection, sports-car feel and manners, craftsmanship pervades every corner
Lows = Sticker shock, not as trackworthy as the GTR, tiny trunk, clunky shifter and clutch feel, floor mats cost extra
Verdict - Costs nearly as much as an M3 and a GTR, you could almost buy 2 standard 911s instead
GT-R
Highs = Heroic launch control, nearly lag-free turbo motor, balanced chassis, quick-witted all wheel drive, hides its 3900 pounds (well most of the time)
Lows = Excessive road noise, strange transmission clunks, rough one-to-two shift, can feel too wide, heavy and big
Verdict = Nissan aims for Ferrari and hits somewhere between an M3 and 911
M3
Highs = The direct connection between man and machine, vice-free handling, feathery feel, grammy-worthy engine, day-to-day likability
Lows = Not as quick ast the two other cars, somewhat light and numb steering, that stinking iDrive
Verdict = Every other manufacturer should give up on building their own cars and just make M3s instead
And a few stats:
0 - 60
911 = 3.5
GT-R = 3.6
M3 = 4.4
1/4 Mile
911 = 11.8 @ 120
GT-R = 12.1 @ 115
M3 = 12.9 @ 111