S class freighter?

I started my save as a rookie and just accepted the first freighter I was offered. It was a B class and had plenty of base built with parts I hadn’t even unlocked yet which was great for me ‘cause I was so early-game. Finally decided to get around to upgrading to a top of the line freighter, and after a couple weeks just casually checking out every freighter I happened to see the best I saw was a couple A’s.

Today I pretty much exclusively hunted for freighters for four hour (not contiguous hours, I can’t game for that long all at once!) without finding an S class. Finally, I caught an A I liked the look of, so I settled. Before I start spending bulkheads, is it worth it to keep casually looking for an S? Like, is there really any bonus beyond more supercharged slots? Searching gives me few results and most of it is 2-3 years old so may not even apply anymore.

I’d love to hear the groups advice, anecdotes, and other random freighter knowledge.