I don't think it matters so much what diagnoses you get... it does matter that they treat your symptoms correctly and get your meds right. Sometimes when a doctor is keen to label a patient he or she can forget to actually treat them.

Go for whichever doctor seems to listen to you the most, and who is most respectful of your needs. And don't worry which diagnoses is "best." In the end words like bipolar or schizophrenic are just labels... they don't tell you anything important about who you are. You are you, regardless if you get diagnosed schizophrenic, bipolar, or blue spotted alien from Jupiter. Just carry on being you, and find a doctor who respects that.