@ECH I had the same problem setting up my loop with the Micro Res Rev2 and I had bubbles, once I bled the system for a few hours and put the lid on tightly, the bubbles disappeared and this is the quietest Ive seen it been since I installed it. I have my barb coming out the bottom of the res going to my pump because it was easier that way. I do have it almost to the top though but not to the top got to leave room for the circulation and what not.
I also got this Bitspower Cylindrical Res which I love but it was a pain to find a spot for it in the case. I might keep it as a back up or use it as an extra if I ever WC my chipsets, mosfets, vrms, and gpus
