Well, the Activas (210, 215, 220, 230, and 240) and 3 series are 3/4 sized machines, with 6" harps, compared to the 7.5" harp on the Auroras. They weigh approximately 18 lbs, compared to about 23 lbs for my 440. The 430 and 440 are being replaced by the 5 series, so now is a good opportunity to get one of those at a lower price. Maybe you can trade your new 240 in on a discounted 430 or 440. My 440 is a precise, powerful, reliable, enjoyable workhorse. I got the 240 to have a less expensive travel machine, and I got a new 820 for the bigger harp, built-in dual feed, and bigger bobbin. It has so much more to offer, though. The 240 has a powerful motor and many great features in a smaller machine, but it does have a smaller harp.