Quick Question: Creek 5350SE or McCormack Micro pwr & Micro pre?

I can't give a comparison, but I will say you can send in the McCormack to SMcAudio and have them upgrade it to impressive specs.
In fact, they just did mine.
Bob

My Creek is impressive. Delicate and refined. Remote. Two sets of speaker outs. Built like a tank. Good luck finding a great used Creek 5350SE. 

I would wait to make any further decisions until you get the speakers focused on their 3 point sound anchor base.
Your perceptions will change with this.
The timing of the system will seem to go to a new appreciated level.
 With all the AQ cables you added and performing proper tilt back as followed in the manual you can then make a better decision.
 Best,
  JohnnyR