I absolutely agree, Tchaikovskiy has been my favourite for a long long time and is still leading. One of my favourite works is Tchaikovkiy's Piano Concerto No. 1 (performed by Evgenia Rubinova) - why by her? because I just happened to listen to the entire work when she was performing it (I think it was on Leeds International Piano Competition), and since then just fell in love with it.