First off, Welcome to the Forum
I LOVE 1911s. My first NEW firearm was a Colt Gold Cup that my father bought for me. Very shortly that 45 and I will celebrate our 40th anniversary. Somewhere along it's life i had it hard chromed. Strange I can't find a picture of it right now.
A Gold Cup Commander with Ivory grips is my usual BBQ gun. Carried in a Galco horse hide holster that is lined with pigskin
That being said, I also love the 27/327/627 family of revolvers. A 6" Model 27 was the second NEW firearm I ever got. That purchase was not too long after getting the Gold Cup. It is still with me as well.
Many 10s of thousands of rounds of ammunition have been through each of these two first firearms.
Today my collection has considerably expanded since those first couple of NEW firearms. I have 36 1911s, 20 of which are Colts. I also have 28 examples of the Model 27/327/627 family of revolvers, including a TRR8
I would not worry about the TRR8 going away so soon. The Night Guards were a fantastic offering but it was into a market that mostly looks for inexpensive pocket revolvers. Most of the folks that wanted to buy them got sticker shock. The TRR8's market is more used to the semi-custom and custom pricing of target revolvers.
Repair parts are not too big a deal. Most all internal parts keep going for a long time in other models. Additionally all companies keep parts on hand for 10 years after an item is discontinued. What happens next is that the remaining parts are usually sold to a parts house like Numrich Arms. With the TRR8 the only part that would be in jeopardy of becoming difficult to find is the barrel assembly. If a few decades down the road you need one and can not find it, you can use the barrel off another model and create something unique.
When I was younger and just starting out in the shooting sports, I had less cash available. When faced with a dilemma like yours where the two possible purchase choices are already made and I was just seeking advice as to which of the two to get but there was no real set of requirements or needs that would turn the table one way or the other, a wise buddy of mine would say "Get Both"
He would tell me to buy the one that was available first. Then go an put a the other one on Lay-A-Way with a deposit. I would make weekly payments on the second piece. I also had the advantage that the gun shop I did business with was also the range I shot at. Since I did this kind of thing often the owner would let me shoot the gun that was on Lay-A-Way while I was paying it off. I just had to give it a wipe down instead of a cleaning and let them put it back in the safe.
I know in this day and age of computers and internet many folks don't have a gun shop that they developed a relationship with and you might not get so lucky with a store owner, but look into it.
If as a starting shooter I had to absolutely decide between one or the other, based on the little we know about you so far, the TRR8 would be the purchase.
Why? Several reasons. Since you already shoot this caliber, you probably already have a small supply of ammunition on hand or at least have a source that you regularly use. You also might be able to get better deals buying a case of ammo instead of a few boxes at a time since you are purchasing a single caliber. You already have the cleaning equipment on hand. You are probably also familiar with the field striping procedure of the S&W revolvers.
