Do you notice an increase in noise throttling back your 2075s? That would be my primary concern.
No, no perceptible increase in noise at all. The flow control is just a simple ball-valve - by moving the lever you are decreasing the diameter of the outflow.
Here is another idea: all baskets have a short pipe in one corner. Each pipe should have a black rubber "washer" on top. If any of the 3 is missing or is badly cracked/worn the flow inside the can will be disrupted. I had to replace mine after ~ 10 years. They are ~$6 for 3.