I suppose everything comes down to personal preference in the end. For someone who lives in the mountains, a 150 hp engine would be highly desired over a stock 100 hp. For some who fly a lot of IFR, a Garmin 530W would be more highly preferred over an ARC 328T. The question is how much are you willing to pay for your preference? You can't lump all 150/152s in the same bucket and say a '77 has no price differential from a '67 all things being equal--they aren't equal--the '67 has 10 more years of wear and tear as well as the difference in features. You may prefer the design features of the '67 and prefer the cheaper price--good for you. Doesn't make the '77 worth any less to a prospective buyer who prefers the '77 features.
