My main considerations are reliability, strength and trouble free operation. I am looking for particular brand recommendations also, please. I want a factory rifle as I can’t afford a race ready set up.
Looking at your main considerations, I would suggest looking at the Henry Big Boy. It is made in the USA with a no BS guarantee. That means that if it isn't perfect, you call or email them, they send a prepaid UPS label, it goes back for a couple weeks and when it returns they have fixed it It doesn't cost you a penny to make it work. You don't have to buy a rifle and then pay someone to make it work right.
I have one... it had an occasional feeding problem when I got it. I felt I paid for perfection. I emailed them, it went back, and less than two weeks later it returned with the offending shell carrier replaced.
The action is simple... not much to break. Some people don't like the way they load. Personally, I have several lever guns and truely hate forcing rounds thru the loading gate and up into the tube. Simply sliding them in through the front on the Big Boy without having to fight with a magazine spring and a loading gate spring sure is nice.
I have a Marlin in .357. Fortunately, it is a real Marlin and non a "Cajun Win-Lin". It works well too. The Henry Big Boy is noticeably heavier than the Marlin. If weight is an issue, the Big Boy may not be the rifle for you.
When I went shopping for a .45 rifle I considered the Marlin until I heard about quality issues after they left Connecticut and then also discovered that Marlin no longer made a .45 Colt rifle at all. They still make it in .357 and .44 I really wanted American made by a company that backs the gun with a good warranty. The Henry is that. In fact, they will not even release info on how to take it apart past typical field stripping (removal of the lever and bolt) because they feel that anything requiring taking it that far apart is probably their problem and not the customer's problem. I have hear that they come apart pretty easy if one really wants to out of shear boredom , but haven't felt any need to attempt to do so.
And, before some else points it out, it isn't a replica of any real 100 year old rifle. It is more like a Marlin 1895 or 336 but without a loading gate than anything else. However, it is SASS legal, American made, and has a No BS warranty.
I hope that helps,
Rick
I forgot to mention that the Big Boy list price is only about 2/3 of the list price of the Uberti 1873.