When i bought my 40.160 all i had to chose from was the 40.300 (did not want to take out a second mortgage) 40.160, 32.115 and the 24.150. The only suitable option was the 40.160 as far as amp range was, 160/210 But the 32.200 now that is something i would like to get my teeth into. 10s capability and 200/260A Who wouldn't want that. Plus there is no computer needed no program card just turn it off change the switches turn on see how it goes. SIMPLE and so far it works.