Tough to make any recommendations without being personally involved in your case. Other possibilities other than surgery would include shockwave lithotripsy, percutaneous surgery, retrograde ureteroscopy, and laparoscopy. The choice of procedure depends on your individual case.
You may want to discuss these options with your urologist. Typically a urologist at a larger academic medical center (i.e. in a larger city) would have more experience. If there continues to be conflicting treatment suggestions, there would be no harm in obtaining another opinion.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.