CZ 75 series
Beretta 92 series
Sig P226/P228/229 series
HK USP and P30
Walther P99AS
Beretta PX4
Colt 1911s
Glock is towards the bottom of the list. Yes, Glocks are very good, popular, and highly reliable utilitarian pistols, but the "greatest???" Not even close. I buy Glocks and other polymer strike-fired handguns because they're relatively inexpensive, disposable, dime a dozen, light weight, and easier to EDC. If I were to buy a pistol that I'd have pride of ownership or as a collectable, BBQ gun, heirloom, etc., Glock doesn't come to mind.
Browning Hi- Power is an icon pistol, but I'd put CZ and Beretta above it. There's a reason why 1911s, CZ, and Berettas are still popular and going strong, and Browning Hi- Power isn't a big seller at all.