Need to replace posi and gears , auburn type in there now

Went with clutch type , wish it were still $380.00 . It has to be shipped from BC , seems not many places keep these units in stock . Was going for Auburn set up , but from what I have read here , and what I remember back in the day clutch is better , locker even better but not available in the time frame . Car is on the lift so time is critical . Plus it goes into stoarge in 2 weeks