As a fellow 320i owner, I will give you some feedback as well. First of all, that car looks amazing.... looks like mine actually hahah.
As for the car itself, I have owned it for 5 yrs and I have had no major problems with it.
As for the HP etc, you should take mine for a boot and really see what a 320 can do. I have had mine chipped by Mark D and those who have sat in my car can not believe the pull that it has. Now you wont be able to dust M3s etc but for me, it has enough power for me but then again, I drive my car for comfort and not to play with Hondas on the road. When I need the power in traffic and straight aways, its there for me...
Alot of times, people knock 320's and it p*sses me off sometimes as they think any other BMW than an M3 with Hamanns is sh*t.
Mine is is a 93 and still runs very strong. I get my car serviced by Charlie (Bimmersport) and he keeps it healthy.
Here is a pic of mine....