How many years is a flagship component good for?

I buy my gear by purchasing top end units from the past. I am just considering bringing my speakers up to 1996 from 1983. Despite their age I have heard VERY FEW that equal my present ones. I often use a tube pre built in 1987 and SS amps from the early 90s. In fact with minor exceptions everything in my system has been discontinued and was so when I bought it. I regard it as a total myth that there has been an across the board upgrade in digital as well; in fact the opposite is true in most cases. One of my DACs is the Audio Synthesis DAX from 1992, its current rating on the HIGHFICRITIC scale is 46; a current MSB that runs about $10K is 48 and many current 2 to 4 thousand $ ones are in the 20s. The Benchmark is about 25. I use a Meridian 200 transport from the early 90s as well. GOOD components age very well, the trick is knowing the difference between good and expensive, they are not necessarily the same. Current best equipment will be better than past best equipment but the cost is usually totally disproportionate. Those who MUST have the latest and the best subsides the rest of us. But even in the latest equipment there are relative bargains to be had; I see current top equipment listed here at big savings all the time; just not as cheap as really good discontinued ones.

Kristian, I take it quite seriously as you would yourself if you knew more about audio. I have spend nearly 50 years in audio myself and am quite confident in my own taste but lack the time, money or energy to hear everything on the market. Therefore I have decided to place faith in reviewers whose taste resembles mine. I first encountered Martin Colloms when he was chief designed for Monitor Audio in the 70s. I bought all the ones they brought over to the Chicago CES the first year they exhibited over here and almost became the first importer. I have followed his work and writings ever since and know of no one else in audio who has had the breath of designing and reviewing experience that he has had. Is he infallible? No one is but I have always found his views helpful even when I disagreed with them and you cannot ask more of anyone. The point about price is that many of todays products have prices that have been inflated for beyond their worth. Ones almost as good are available at a fraction of the cost. The best is always expensive but yesterdays best is affordable for me and todays is not.