here's how i would compare the two:
acceleration - turbo
handling - tie (in various comparisons, both cars have won some and lost some on different road courses)
handling 'feel' - 360
looks - 360
engine sound - tie (with a nice performance exhaust on the turbo, both would sound REAL nice, but that's just my opinion)
exoticity - 360
reliability - turbo
cost (including maintenance and repairs) - turbo
structural safety and stability - turbo
weather safety - turbo (AWD is DEFINITELY a plus)
room - turbo (the back seats are convenient if you need to lug little kids around)
best suited for track driving - 360
best suited for road driving - turbo (not only does the turbo feel better on the road, but its more usable.....people can park porsches in many different places and not have to worry too much about vandalism since porsches are fairly common...as an example, i recently saw a shiny silver 996 turbo parked in a 'ghetto' part of town at Hooters.....the modena on the other hand is not a car you can just drive anywhere)
fun factor - 360
as you can see, choosing between the 360 and the turbo is not really as easy of a choice as one might think. the turbo is cheaper, slightly better performing, more reliable, more usable, and safer......the 360 on the other hand is expensive, beautiful, and fun as hell. however, remember also that i'm only comparing these cars at there absolute limits....in other words if i were pushing both cars as hard as i could on the road, the turbo would be more sure-footed.....but for normal driving, both cars will have more than adequate safety in terms of handling and grip. plus if i were rich enough to afford either one of these cars, i would be able to afford a nice daily driver anyways (an m3 perhaps?), so the daily transportation and room issue is not really a concern in my opinion. all in all, although i love the 911 turbo (hell, its my screen name!!), i gotta give the nod to the 360 on this one
FORZA FERRARI!!!