Err.. Vivaldi was in no way a Romantic or Classical composer--he was a Baroque composer--and his compositions were hardly the garbage of his era. I don't particularly enjoy his music because Baroque has never interested me all that much, but Vivaldi was quite original for his time, even if his works do get somewhat repetitive in relation to one another. As for Tchaikovsky, I really have no idea where you could be coming from saying his music was the garbage of the Romantic period. I tend to enjoy Post-Romantic and early 20th-Century Art Music the most, though I tend to pay more attention to specific works rather than composers on the whole. Notably, I really enjoy the works of Karol Szymanowski, Dmitri Shostakovich, and Igor Stravinsky, though Arvo Pärt and Charles Ives are also fantastic.