Heathkit SW-7800 questions/suggestions

I'm hopefully going to upgrade my Hallicrafters S-120, but i'm not certain what i want to replace it with yet, but i'm kinda eyeballing a Heathkit SW-7800. I cant really find much info on it, besides its about 30 years old and it covers 100KHZ-30MHZ including LongWave reception, which does sound interesting. So my questions are, are they a good upgrade to an S-120, are they overall good general coverage receivers, and what are they worth in good working order? If they are not any good, what would be another general coverage receiver to get in the 100.00-170.00 price range? I'm mainly looking for a full size receiver, but a large portable will be fine as i like the option of using it on DC for a power outage.