Yeah, sorry, rereading that I realize people might not understand what I meant. Here's take two:
Don't just buy what LE use because LE use it. This goes for guns (Glocks), ammo, lights, tactical gear, shoes, etc. I think it's smart to look at what LE use and try to determine why. If you agree with their reasoning (best gear for the price) then sure, get it. I just hear a lot of people saying they are going to get a Glock because "if it's good enough for LE, it's good enough for me." I think that's a pretty lame reason to buy a specific sidearm, kind of like saying, "I don't really know anything so I'm just going to buy what someone else likes."
There are so many different firearms out there that it really behooves you to go and check them out - at least the majority of them - and see which one you REALLY like and make a great, informed decision.
Of course, this is all just my $0.02.