Thing is you wouldn’t want the 10 Year old DLSR. I used a leading edge one back then; it was good but BIG and EXPENSIVE. The state of the art was moving so fast that building something durable was a waste. The technology is only now slowing down in terms of quality improvement, price drop, and efficiency increase.
Size isn’t the problem for me that it seems to be for some people. I have a good range of lenses but seldom use anything shorter than 75-300. I’m not likely to ever be a street or nightclub photographer.