I'll weigh in with my $. 02 on older Airstreams. In 1983 I bought a '69, 31 ft. International model. The decor was atrocious and it had had som collision damage at the right rear corner. However, I bought it because it was about the only AS I could find at the time. My wife and I redid the interior and got a good do on it--really sharp! I kept it until three years ago when I bought my '92, 34 ft. Limited Edition. I sold it to a guy north of San Francisco for $7,500. 00. He seemed tickled with it.
I pulled it all over the west with few real problems. Leaks were no problem. Replaced the refrigerator in '90, had some trouble with the Suburban furnace, but the a/c worked the whole time. Had to engineer a new support for the holding tank in '96. All in all it was filled with very pleasant memories.
Low profile has some trade-offs as might be expected. We didn't retire until last month so were not in it as much as we'd like to have been. After we've spent more time in the Limited I may sing a different tune, but up to now I haven't minded the lower headroom (and I'm 6'3"). I love the ease of pulling and the good fuel mileage that accompany the low profile!