All of the mentioned rifles are quality firearms. I especially like the MDL 70, much more solid than any rifle made from drilled bar stock.
If I had to recommend a deluxe or ultradelux rifle I have to endorse the Cooper MDL 56. Cooper chambers their rifles in chamberings almost unavailable in other makes.
I own a Cooper MDL 22, 6-5-284, 26", 1/8. It is the most accurate rifle that I or anyone I know has ever seen short of a dedicated target rifle. The MDL 54 and 56 are sporting type rifles.
They are expensive, but I can pretty well assure you that you won't see many of them at the range.
When I had a gunsmith in South MS mount rings, scope and boresite it, he told me that I had something really nice, and that he had only seen one of them before, and he appreciated being able to handle one.
You can spend anywhere from $2000-20,000 on one if you want custom. The generic AA+ Claro is very nice, some of the blanks I saw at the factory were amazing!
I'm like you, I have gone through many rifle types, Rem, Mauser, Ruger, Browning and Winchesters amoung others. I have never had a real lemon, some were a better fit for me than others, but all were suitably accurate and reliable.
I now only own a few rifles, Weatherbys, Coopers, Rugers and an old Interarms MKX that my father left me. I would rather own only a few quality rifles than dozens of generic rifles that everyone else uses.
It's hard to really wrong on new rifle these days. All of the manufacturers I know of stand behind their product, some better than others perhaps.