We have a selection of Deagan and Leedy Xylorimbas in our rental collection. Xylorimbas sound more like a xylophone in the middle to upper register and more like a marimba in the lower register.
Our Deagan xylorimba, or as Deagan called it "marimba-xylophone", is 4.5 octaves C-F and is more marimb-likea than xylophone-like in the middle to lower register.
Our Leedy xylorimba is 4.5 octaves F-C and is more xylophone-like than marimba-like in the middle to upper register.
Both instruments are perfect for repertoire of Messiaen, Boulez, and other modern French composers. Puccini's Turandot even calls for a bass xylophone which theses instruments work well for.