I went to the 55's and low Z mod. (used) ECM and all with the Extender Extreme chip and upgraded my translator chip just before they came out with the 60's.
I like the T+ and Extender Extreme chip and I upgraded from 42.5lb. Bosch injectors.
I would probably go with the 60's only if I decided I would never need to go bigger with injectors, Turbotweak chip from Eric M. is what I would use also.
Got his chip in the other car with the Bosch 42.5's in it, works fine.