***sorry, logged in as Viohazard instead of All Ears, oops!***
Japanese teachers are heavily into concertos, so here are some which Viohazard has played over the past few years...of course, they represent his teacher's understanding of his personal tastes, not the complete range. Viohazard isn't particularly advanced - his teacher's star pupils played these things 2-3 years younger than Viohazard did.
Easy - Rieding concerto is more lyrical than Seitz, which is very straightforward. Viohazard played the Seitz No. 5 a few years back, around the time he did the Rieding (which he enjoyed very much) but just played the Seitz. No. 4 this month, and while it was admittedly a bit boring, he certainly had to work on certain bowing techniques for it.
Easy but plenty of work required to master them, and enough "meat" to prevent boredom even when studied over a long period: Vivaldi A Minor and Bach Double. I can see why they are such popular choices - they are not very complex or unexpected, so they are easy to memorize, and they don't require advanced techniques.
Harder, but not very "advanced": Eccles/Sonata (Suzuki book), Monti /Csardas, other Vivaldi or Bach concertos. By "advanced", I mean that some common "advanced" pieces really showcase/work-out certain advanced techniques (e.g. Wieniawski), or a command of expressive techniques such as vibrato or bowing (e.g. Mendelssohn) that an intermediate student just isn't secure in yet.
Smaller pieces he's enjoyed: almost any of the Dancla/Airs Varies.
Orchestral: Brandenburg No. 5, Vivaldi Concerto Grosso 3/8. Quartet: quite a variety of Mozart chamber music, and a big favorite recently (from John Kember's Romantic Music for String Quartet) was a piece from Borodin's Polovtsian Dances in his Prince Igor opera.
Listening: Isaac Stern: Concertos from my Childhood. This CD is widely available, and really does have all the old chestnuts on it, invaluable for young kids, I think - there are few recordings available for these student concertos, and Viohazard also identified with the cover photo of a young, chubby Stern stripped down to his singlet with his violin clutched firmly in sweaty young paws!
Over this Grade 4/5 period, Viohazard started out liking Grieg, then Tchaikovsky, and then woke up to Debussy, but doesn't seem ready (emotionally?) to really enjoy listening to the Romantic biggies such as Beethoven or Mendelssohn...put those on the CD player, and he wanders off to his Lego!