Oh well, it seems i picked the wrong composer to start off with here, ha ha.
Certainly i can appreciate the unique brilliance of Mozart and Beethoven.
I've recorded series about them on the Arts channel on satellite television. But for me, my favourite composers are the likes of Bach (i own a large collection of his works) and pre-Mozart early 17th and 18th century composers from the Baroque period; Vivaldi, Archangelo Corelli, Handel, etc. Tchaikovsky is one of the few later 19th century composers i tend to listen to with any regularity.
For me, the 18th century Baroque period has for too long been neglected, belittled; but in recent decades a new generation of scholars and musicians have began to re-evaluate it, and rediscover it for a new generation of listeners. Recently i saw a concert devoted to Handel's work... the whole orchestra was dressed in colourful 18th century attire with original instruments, grey wigs and leg stalking for the gents, ha ha.
A more recent documentary was about rediscovering Vivaldi and the original instruments/vocal styles he originally meant to be employed in her works, which later 19th century generations tampered with/belittled. One of his works was sung by an all-female vocal ensemble in an old Venetian church... it was beautiful to hear it in its full original glory (and to be able to compare it to its 19th century later interpretation).
For me, the most overrated of the composers is Wagner... to my ears, he is mostly all pomp and noise. The dictator's favourite, lol (its true; most dictators of the 20th century have highly rater Wagner above all others). Yet, many disagree with me and see him as one of the greatest of all times. I respect their opinion of course.