My Janome MC 6600P is very quiet and had the needle up/down, but it costs almost 3 times what you want to spend. Maybe you could visit a dealer and see if they have some used models. My Husqvarna had the the needle up/down and it has the low bobbin thread indicator too - it is also an embroidery machine. I know my dealers do sell used machines because they take trade-ins all the time.
Have fun looking.