What is the difference between all these student horns?

So I'm new to the trumpet, I got my cheapo trial instrument (Antigua Winds unknown model) from shopgoodwill for $50 to see if its something I want to pursue, it is... I've been thinking I should upgrade to a more respectable brand (Bach, Yamaha, Jupiter etc..) and when searching out used instruments on reverb and ebay in the $200 to $500 range there are just so many variants some of them seem to be older models that essentially seem to be the same, but some just seem to be the same? Like the Bach TR301 and the BachTR300HS, there's a bunch of other examples, especially from Yamaha. I've been around instruments for quite a while, I've played guitar and keys for nearly 2 decades, and last year I got into saxophone, I get that a lot of this could be marketing, but what is the difference between a YTR-2335 and a YTR 232, or a 332 and 3335. Does the YTR-200ADII Advantage, really provide an advantage, and is it a $300 advantage?