I have a Glock 17, and I love it.
I have bee shooting in IDPA for a while now, and have used my S&W 669, Sig P-210, custom 1911, and Kel-Tec P11. (I've had a Sig P-239, which didn't fit my hand well, and a Sig P220.)
I find the 17 the easiest to shoot well of the bunch. I consistently shoot faster, more accurately, with more confidence with the Glock than with any of the others. Mag swaps are easy and natural.
I could probably do as well or better with the P-210, but magazine exchanges are more difficult -- because the mag well isn't beveled, and because of the awkward heel-type mag release; it is very accurate. I think it would take me a lot longer to become as good with the P210 as with the Glock.
(My son was in training to be a cop, and I bought the refurbed Glock so he had something to shoot during the school firearms program -- they furnished clapped out S&W autos, but you could use your own.
He did very well with it. And as I started to shoot it, I was amazed at how well it worked for me. I am now a Glock believer -- at least for the 9mms.