Hi Irfan; I like Glocks very much myself.
The tennifer finish allows these weapons
to be very durable. Most reliable? NO, get's
my vote!!! Sig-Sauer get's the nod here; due
to the functionability even in extremely cold
weather conditions. There are a lot of others
that meet this criteria, also. Some of the
Smith & Wesson stainless models come to mind;
particulary in the revolver line.