Well Glock is a decent company for the support it gives to shooting sports, its support of the 2nd amendment, and its willingness to allow its parts to be readily available to the public. (it also tries to ignore Lawyer requirements on its guns)
So they are less willing to admit recalls than say Ruger but if that's the business model they choose. They are not the only big company not to admit issues.
And it sticks to a caliber, even marginally popular ones, and has never discontinued a gun (even the 17L and 35)
And its production line up is quite substantial
1. Soon to be Gen 4 G22/G17 (others to follow)
2. the 17/22/19/23 in the RTF 2 grip
3. 17
4. 22
5. 24
6. 17L
7. 19
8. 23
9. 20
10. 20SF
11. 21
12. 21SF
13. 25
14. 26
15. 27
16. 28
17. 29
18. 29SF
19. 30
20. 30SF
21. 31
22. 32
23. 33
24. 34
25. 35
26. 36
27. 37
28. 38
29. 39
30. 18
so 9mm, 10mm, 357Sig, 45ACP, 45GAP, 40SW and 380 and a full auto model, of course some Glocks are not allowed in the US.
So to say GLOCK is the best would be subjective, lots of Glocks out there, if they don't do it or you, Great. I'm glad we have choice the more guns on the market the better.