I've loved a lot from him. The first Halo had a very grand and solid soundtrack which also showed very good range. Just listen to the difference in Perilous Journey, Ambient Wonder and Devils... Monsters... while all remaining brilliant pieces of music. Very effectively used in game as well to really set a great gaming mood. However, I don't know if I could apply that to anything else. ODST for me had a few great tracks and the rest was rather forgettable. Reach had I think like two original tracks I liked a lot and the rest was forgettable. I think he's better at composing for fresh and new experiences. I thought Halo Wars and Halo 4 both had just as solid of a soundtrack than the first Halo, although, I really love orchestras/symphonies in general.