SingleFile is great for single pages. All the tweaking I do is enable or disable saving scripts, and it works for >90% of webpages. Output being a single file (heh) simplifies things enormously, there’s no hierarchy or folders to deal with - hard to imagine your saved files not loading or breaking in some way as long as the original capture works.

SingleFile has a nice batch download feature as well. It's a little rough around the edges, but useful when needed.