krell FPB300 or jeff rowland model 7


i have a pair of Hales concert five speaker, i plan to buy a used poweramp, Jeff rowland model 7 or Krell FPB300
tongpoh
I cannot say for sure, but I would suspect that the Model 9 would be the natural competitor for the 7, not the Model 8. The Model 7 holds its own with the Jadis JA-500 in micro dynamics and shear music believability.
when i decided to buy a used jeff rowland 8Ti, another guy offer Plinius SA250 MK IV, it USD1,800 cheaper than jeff rowland, which one too choose?