I really enjoyed my experience of purchasing my e90 330i there. The internet salesman was very knowledgeable and didn't BS me after I demonstrated I did my homework.
Just be really weary of their loaner cars. First time, I got an X3 that had coffee stains all over the center console. I also found a used condom wrapper in the back footwell.
I complained to the receptionist but it must not have gotten through to their service dept.
Second time I had a loaner, I got an e46 325i. The thing stank of smoke and it had a faulty temperature sensor (it thought it was -40F outside) which made the car blast heat at me the entire time.
Did much more complaining to Open Road's management and I slammed them when BMWUSA called for the satisfaction survey. Haven't had service since. Not sure if I want to go elsewhere for service now.