I recently had the opportunity to observe the pricing patterns in this topic firsthand. I sold 2 almost identical Padodas, a 66 230 and a 67 250. Both cars were DB180 Silver, both cars had black leather and both cars were optioned with the ZF gearbox. They had both been restored as needed, not concours examples but excellent quality #2 to 2+ condition cars. The market was the same, eBay, within one month of one another. The 250 sold for 49, the 230 sold for 46.5. The 250 had better paperwork but the 230 had original fenders. If you reduce these prices down to the level of basic driver quality cars without rare options, say 50% to 24,500 and 23,250, the difference equals $1,250 between the two. At these price levels I think the difference in quality over-rides the difference in nameplates. At the higher price levels I think the 280 starts to make a difference. Many people who saw the cars thought they would be worth 10-25K more if they were 280's. Personally, I'm with Iverson, I think the 250 is the best of both worlds, early styling (better steering wheel, hubcaps, seats, etc) with some of the later mechanical improvements. My 2 cents.
Bob in Portland
