Below are some professional trumpet players to listen to.
Classical performers to look for: Maurice Andre, Armando Ghitalla, Wynton Marsalis (crosses styles and is equally good in classical and jazz), Rolf Smedvig (a Bostonian), Steven Burns (from Wellesley!), Timofey Dokschitser (Rhapsody, Concert Pieces, Preludes), Rafael Mandez (Rafael Mandez, vol.1 is really awesome!), Edward Tarr, Haaken Hardenburger, Phillip Smith-NY Philharmic (he recorded a CD of concert pieces used for regional honor band auditions), Fred Mills. Doc Sevrinson (has some nice classical recordings as well as the jazz. Composers and standard classical repertoire: Hummel Concerto, Haydn Concerto, Hindemith Sonata, Telemann, Artunian. Specific recordings of interest: All brass quintet recordings are excellent; anything with Ghitalla; Eastman Wind Ensemble - Wynton Marsalis - he plays Aaron Copland's "Quiet City"; A Portrait of Wynton Marsalis (?exact title) - includes Hummel Concerto and Flight of the Bumblebee; Baroque Masterpieces for trumpet and organ (Tarr). Jazz performers: Arturo Sandoval, Dizzie Gillespie, Clifford Brown (With Strings), Chuck Mangione, Maynard Ferguson (Chameleon), Miles Davis (Miles Ahead, Birth of the Cool), and of course Louis Armstrong (although he does non-conventional things with his tone!). Also check out some of the newer greats: Lee Morgan, Freddie Hubbard, Louise Baranger, Nicholas Payton Jon Faddis, for example. Randy Brecker & his brother Michael (tenor sax) have a number of CDs, "The Brecker Brothers", Bobby Shew, Warren Vache´.