Does your .5 fit in the nuvo 10g? Is it pretty quiet? Might just exchange mine for that one.
It's tight but it fits. I have been using it without issue for about 9 months. Everyone has a different level of hearing and sensitivity, but to me it is very quiet.
Now I'm wondering about my hearing, because I just went to listen to the pump and I can't pick out any specific noise coming from the pump.