Charles Wood's anthems are tuneful, solidly constructed, and masterpieces of text setting. His evening canticle settings are dull as all get out.
Michael Tippett's Concerto for Orchestra is a clever idea which loses nothing in the execution, and (more importantly) is eminently enjoyable even if you don't figure out the underlying structure. His piano concerto is one of the best of the century. How could this man write dreck like The Vision of Saint Augustine? I don't get it.