I often find I miss firearms I've traded off or sold. Some I may choose to replace or re-purchase at a later time, when funds are available.
Some just did not work out and I'll never buy one of those again.
My old Polymer 9mm Witness was given to one of my Nephews, who needed a Pistol for Home Defense and occasional Target Practice.
Later on, when I found a deal on an SAR B6P, I considered my Polymer 9mm Witness, replaced.
Lucky for you guys, TriStar C100's and Cz P07's will most likely continue to be made.
I have a SD9VE I would never sell. With an Apex trigger, complete polish of all internal parts and a few internal adjustments , weight and overall feel in the hand and its accuracy.... it is near perfect.
I have the earlier S&W SW9VE, with a minor Trigger job, that I'm quite fond of.