There's a handful that I entirely would.
For sites that provide a service, or sites which provide new (good) content on a regular basis, I wouldn't mind paying a subscription for them. The two main problems are getting the audience in the first place, and all the sites that are useful but you might only hit once or twice in your lifetime when you were looking for that thing.
But ultimately I don't have a problem with ads either in principle... if only they wern't so shitty. Back in the 90s when sites would hand pick ads, it made sense. The ads were often relevant because the webmaster (we're in the 90s remember!) knew their audience. The ads were also often locally hosted, which meant they didn't slow down the page load. Todays overloaded ad networks serve you at best ads that arn't relevant at all, and at worst scams/malware... and in either case, they'll certainly slow down the page load time and come with all kinds of privacy implications.