This is like asking which Village Person is your favorite.
I was gifted a 1958 vintage Model 70 Featherweight in 30-06. it stacked up 165's into tight little groups with a standard charge of IMR4350. Not much you could do to get it to shoot poorly. I killed my first big game animal with that rifle, and probably shot 20 whitetail with it. I ended up gifting it to a group in Missoula who was putting together gear for first time hunters to borrow to see if they wanted to get in to hunting.
My Ruger M77mkii in 30-06 shoots the same load of 165 Barnes I developed for the Winchester into small groups too. I had to bed the action & put in a timney on that rifle. She's also had a lot of cosmetic work done to her stock and the magazine shortened to help shed some weight. With a VX3i in 3.5x10 she comes in at about 6.5 pounds.
Before Dad passed, he sent a 1888 Haenel Mannlicher home with me. I had idolized that gun since I was a kid. It's made for chamois and mouflon hunting in Europe. The work on it is intricate and delicate, along with it being the slickest bolt action rifle I've ever felt. It took years to find a bullet and load that made it workable as a hunting rig and there's still a lot of work left on it due to some bad machining on the claw mounts, but it is one of my absolute favorite firearms because Dad gave it to me. I found a note from the son of a soldier who brought it home in 1945 from Germany. That just adds to it's favoritism.
Those have been favorites. The winchester because of the story behind it and how easy it was to get it to shoot and be succesful in the field and the Ruger as it was my first rifle I put together on my own. The 1888 because #*^@#* Nazis and thanks Dad.
The worst I've ever had was a Ruger Hawkeye in 300 WM. Beat the living snot out of me and it wouldn't group at all. I traded it for a pre-64 Winchester 100 that has a weak extractor and is basically just a single shot until I fix that issue. Good trade. Would make it again.
I apprecite the sentiment and the aesthetic of vintage rifles. I hunt with them and have more of them than any kind of firearm. The craftsmanship and artistry of a Victorian double rifle is 10 times what it is on a pre-64 model 70. As technology advances, it makes the economics of hand-crafting obsolte except for those special occassions. The industry either advances or dies (See the English gun trade post WW2).
I picked up a Seekins PH3 in 7prc and a Vortex Viper HD this year. I generally tend to fall into your camp,
@Mustangs Rule, but after shooting some newer rifles, I get the allure. They're not hand-fitted by craftsmen, but the innovation in manufacturing techniques are amazing, as is the accuracy those rifles can achieve while also reducing felt recoil through stock design and a brake (or suppressor). I haven't had the time I want to spend with it but in the first 60 rounds it's every bit as accurate as I can be and it shoots multiple bullet weights well. It's heavy as heck at 9.5 pounds w/scope but I have to admit it's growing on me. Is it a favorite? Time will tell, but it's easy to be behind the trigger on it, and it lends itself to being pulled out of the safe ahead of some of the others. Those innovations don't put stalking safeties on a Jones Underlever Hammer gun w/Damascus barrels, but they have allowed for a system that allows for quick barrel changes w/o a gunsmith and tolerances that were once only the purview of masters of the trade.