Can you (or your product expert) tell me what the difference is between TI pn TPS62000DGS and TPS62000DGSG4 (both are 80 pc tubes) and TPS62000DGSR and TPS62000DGSRG4 (both are 2500 pc reels). In looking at the data sheet, I can figure out what the difference is (all have the same package type – VSSOP, same number of pins, MSL, OP Temp and device marking)???