But Porsches in general are also known to be very reliable. Some more than others. So what exactly went wrong with 911 you had? And what year/engine did you have? Very curious.
IMHO based on what i read on the forums Porsche reliability is questionable.
i've seen 911 engine problems (catastrophic), pdk failures, bore scoring (leading to engine failure) on 6spd/rennlist; the frequency a new major problem occurs is about 1/1.5 months (pdk/engine) in north america (i started to bookmarking the links as i couldn't stop ignoring the failures). this number ive collected doesn't include cayman, boxter, cayenne or 996-911 engine replacements but the manufacturing/engineering process are similar to 997-911 (again on the forums) nor does it include the numbers on the uk/pistonheads forums (where there are threads/polls to track the number of failures).
while some people may think i am reciting internet scare/alarmist stuff... during my ownership time, i know 4 ppl personally MY05, 06, 06, 07 911's hat have had engine replacements (avg milage of failure being 45k miles) none due to infamous ims-lawsuit issue but all due to bore scoring (2 fixed under warranty, 2 rebuilds out of pocket). now one owner tracked his car HARD, and one i have zero history of, but the other 2 cars were babied and maintained to dealer spec.
out of fairness the 09+ the dfi engines are completely different in design and no longer have the older engine failure issues (from what ive read) , however in the past 9-10 months there are some pdk failures on the 09+ -> 2014 cars that seem to be happening out of nowhere and is causing anxiety (pdk replacement is 14 grand) for some owners.
if you get a p-car, my opinion is get a lowest mileage one as possible; with full service history (ideally dealer). compression/leakdown test during ppi + aftermarket warranty (assuming its not already cpo with warranty).
i've been on the nsx forums for years and ppl here enjoy their cars for the most part worry free (look at the number of high milage, no warranty nsx here that keep running till the end of time), but the number of 'bulletproof'/'reliability' threads on the 911 side of the forums is hard to believe (until you spend a year on the 911 forums and see with your own eyes whats happening in real-time). solidol, i suggest you check out the p-car forums and hang out there to make your own opinion. i find it hilarious (sadly) that it's an incredible 'accomplishment' if a p-car hits 100k miles/160k km on the car's original engine. maybe ive been spoiled by seeing so many nsx's (and my parents previous $h!tbox chevys) approach 200k miles over the years.
now i do want to conclude saying that i LOVE MY 911. its beautiful, and drives brilliantly (15k miles with warranty) and i think its nice and sophisticated as it has all the nutty Porsche options (full leather etc etc)... knock on wood as my ownership experience is unscathed (thus far). but love for the car and brand (for any car) doesn't mean blindly guzzling the koolaid (some 911 friends after engine failures still argue that their car is 'bullet proof' and that the failure rates are 1%.... i dont know how my friends make up this number since only porsche knows the truth and it's in their best interest to not say anything).
one other thing is that i have also driven 1/2 dozen nsx's during my dream car search (91s->04s), the nsx does have a more exotic driving/position experience but the p-car feels more modern, has interior from a different era, and is in a different world when it comes to power (another 70-100 hp depending on which 911 year/trim)
don't take nsx reliability for granted!