Oh yeah, I might want to add some clarification.
A boost is a retweet without quote, and only your followers get to see the boost. You can't add your own commentary (but you could comment to the post you boosted). The boosted person will get notified that their post got boosted to your followers.
Qoto has some extra features (as can be seen in https://qoto.org/about/more ) which inclues the quote.
A quote is a 'first post' (so if you quoted a comment, it won't be inside that conversation thread, it'll be its own toot with just that comment quoted in and some of your commentary above it), won't notify the quoted person, and will be sent to the whole Fediverse.
If you intended to have it as a response to the quoted person, I'd recommend the Reply instead to conserve the conversation thread.
Did I hopefully explain the difference somewhat coherently? 😅
@bykimbo
Thanks ☺️