Well, you said 'reliable,' so that is the very definition of the Glock, in my opinion. I only own one, which I do like a lot, in 10mm, but my primary carry pistol is an XD45, which has the same reliability characteristics as a Glock, in my opinion. I elected to go with the XD because I wanted the grip safety. It is not a bother, and it makes carrying IWB without a holster a little bit more practical. The XD can also be bought for a little less money, and it has metal magazines, although I have never had a problem with the plastic ones that Glock uses.
The best thing about either of these two pistols (beyond their reliability and accuracy) is the fact that they can be drawn and fired without worrying about flipping a lever safety...the same way a double-action revolver would be used, but with more than double the ammo capacity. This is subjective, of course, and others will say that is one of their negative qualities. But, they are completely safe, in the hands of a competent shooter, and the simplicity of operation may be very important in a stressful situation.