My t-series BHP, purchased in 1968 (at MCRD San Diego), and carried as my personal weapon on several cruises flying off carriers in The Gulf (the OTHER gulf), gets my vote. After I retired in '74, it sat in my sock drawer for thirty-some years, still loaded with Navy ball (as were the other two magazines). Then, some seven years ago, I again became interested in loud noises and bright flashes. I shoot it (and one of the S&W revolvers I bought) weekly at an indoor range. Its blueing is still capable of swallowing me whole, and its mechanics are still perfect, but it has changed rather a lot. I had a local gunsmith install Cylinder & Slide's SFS kit, and I put a set of Crimson Trace grips on it too. Each of these are immense improvements on the original, with the SFS kit leading. If FN Herstal, the inventor of the SFS configuration as well as the High Power itself, had marketed its SFS pistols better it would still be king of the road. Instead, it went into competition with Browning, its wholly-owned U.S. distributor, and lost! Go figure.
Cordially, Jack