Ten top handguns:
1) Smith "N" Frame revolvers
Beautiful, solid, accurate, high quality, durable, reliable
2) Ruger GP-100 revolvers
Bank Vault tough, accurate, high quality, durable, and reliable -- when the Judgment Day comes, GP-100 will remain along with the cockroaches and ticks
3) Top-quality 1911A1s
The genius of J M Browning will continue for another century -- the perpetual "standard of comparisons" for all semiautomatics and the overall "been there, done that" of handguns
4) Glock 17
I don't own one (although I do own other Glocks), but the initiator of a revolution in autoloaders . . . like it or not
5) Full Size Sig P series autoloaders (e. g., P-220, P-226)
Highly accurate and dependable, with excellent quality
6) Variant One, Full-Size H&K USPs
The aggregation of the best characteristics from Browning's 1911A1 and HP, combined with the most modern materials and manufacturing -- high quality, reliable, durable, accurate, with a great "manual of arms" and combination of 1911A1 safety and de-cocker
7) Browning HP
I'm not sure it is possible -- can you improve on the Grand Canyon or the Mona Lisa? -- but a further refinement of Browning's peerless 1911A1 design
8) Smith M&P Model 10
An excellent revolver from the early/mid century, included because it was THE law enforcement handgun in this nation for so many decades
9) Smith Model 19
Possible the best revolver ever designed, the ideal balance of excellent revolver performance characteristics
10) Beretta 92 (series)
Always resented the 92 for supplanting my revered 1911A1 --due to NATO politics -- as the military's standard sidearm, but it's a fine weapon: accurate, durable, reliable, well designed and well manufactured