Tchaikovsky Violin Concerto. Vengerov. Abbado. Berliner Philharmoniker. Teldec.
Beethoven Triple Concerto. Brahms Double Concerto. Richter. Oistrakh, Rostropovich. Szell. Cleveland Orchestra. EMI.
Michael, I am going to totally agree that these two are must-haves.
Vengerov is arguably the best living violinist. He has a masculine, confident, and energetic technique that makes the Stradiverius soar. If I want someone to hear how good my stereo sounds, the Tchaikovsky Violin Concerto is what I play. This piece is amazing from start to finish. Even Abbado, who I find boring and mannered, seems to be inspired. Abbado whips-up the Berliners to have that sense of communication between soloist and orchestra. This piece is accessible from the first listen, and continues to impress with repeated listening. The engineering on this recording is perfect.
The Brahms Double Concerto features some of the best talent put on stage, PLUS they deliver. Szell's Cleveland Orchestra was widely regarded to be world class and perhaps the best in the US. Szell launches into the Brahms with his charactaristic incisiveness, getting full committment from the orchestra. The soloists throw themselves into the music as well, with an inspired sense of communication between all players. Karajan actually does a good job as well. The recording is very good, with a little hiss, but a very warm 'analog' sound.