I currently run my Cary SLP-05 using Sylvania 7n7’s from 1975 that I got from JAC music Germany. They are a real improvement imo over the EH stock tubes and considerably cheaper than similar 6sn7. You need to buy an adapter for the 7n7.
might be worth looking into as an option.
I would love to compare the Linlai with these but I would need 6 minimum so kind of a pricey comparison and not sure they would fit in the SLP-05.