I just installed new furnance and AC

I just installed new furnace and AC. It is high efficiency pulsating burners type that lowers blower speed when set temperature is met. At full speed it is louder than dumb furnace I had before but after that is pretty much silent (blower at 300cfm). I wish I could afford electric heating but this furnace is the best I can do. Silence is relative term but music now seems to be more engaging. What is your experience? Is your furnace loud? Does it bother you?