1 Glock
I only have 1, Gen 3 G21SF. I have been considering a G19 or G21, however, having a Walther P99 & P99c which I like better, it's hard for me to justify the purchase.
I do like the G21 though, it is my home defense gun with night sights. I traded a S&W SS 1911 for it & never looked...