I have a 440 QEE as well and considered a trade in but then decided against it. I bought a 750QEE as my main machine but that 440 still calls my name. Also, it is portable, sort of, at least I can pack it up and take it to a class. My thought was as long as it is working well, why trade. Anyone I talk to about the 440 says to keep it and love it. That's my two cents.