As a proud owner and user of an ID-5001 for many years until it died a few years ago, I would vote for the LCD screen. Sure, the fluorescent tubes would burn out and need replacing every so often, but that blue and white screen was so much more informative, readable, and actually soothing than the red LED screen of the previous model.
I just had my chimney re-sided last month and the ID-5001 sensors and all traces of it were finally removed.
One of the great features of the Heath's was the instantaneous readouts of wind speed and direction. A derecho passed through here in the early 1990's. It was just after midnight, and I was standing in my great room at the time. I heard a huge 'whoosh' and felt a palpable suction as it passed over, and my roof groaned, if there is such a thing.
Later I saw a max windspeed of 104 mph on the ID-5001! No way my Davis would have captured that instant. When I went for my early morning run that day, I was amazed by the number of downed trees and limbs that I had to circumnavigate. A billboard in north Lincoln with 8 or 10 large I-bar supports firmly anchored in the ground was flattened with the I-bars bent but still anchored in place. You could see downed trees along I-80 all the way from Kearney to Lincoln for years after this. Some here thought it was a tornado, but when all of the damage indicated a wind from west to east, this idea was untenable.