Well I have driven my v2 for some 40k kms till now and yet to face any single issue u mentioned, just wind noise nothing else, minor khar khar was there mainly from trunk, so put sone padding there n its gone, if ur friend's car had compressor and other suspension issues then it does not mean every v2 has these problems, exceptions can b there in any brand.
Yes it has some common issues like wind noise, some weird sounds from trunk etc but can b rectified by identifying the prolematic part,
Ideally any brand new car should not has these issues, but quality control problems are there in every pkdm brand, same is case with faw,
But in this competitive pricing and given features it is still a good buy..
no problem of durability as I have also driven a 90k driven v2 and there was no such difference in comparison to mine which was driven 30k till that time.