Creek SE5350 "Classic" versus SimAudio I-3

Thinking of buying a new integrated; I am comparing the Creek with Sim Audio I-3. Both get good reviews. I have heard the Creek and though it sounded very good across the board, I was a bit disappointed---My expectations may have been too high. Have not heard the SimAudio integrated, and would appreciate any input on its performance. I currently have a pair ofd Silverline Preludes which are about 89-90db efficiency, but they are only temporary until next year when I can afford a pair of Totem Forests or Gallo 3.1. I have been told that neither the Creek nor Sim integrateds have enough power to "properly" drive either of these speakers to their full capability. Thanks Jim