I think the problem when Taylor was singing lead vocals for a whole song was that he was easily the least best songwriter of the four, so he was often singing fairly average tunes. Songs like The Loser in the End and Sheer Heart Attack definitely stand out, to me, as the least best songs from otherwise very good or great albums. Of course, Tenement Funster and I'm in Love with My Car are both great, so that wasn't always the case, but overall I agree that his voice as a lead didn't have the engaging warmth that May's did (when talking about lead vocals not done by Freddie). His high notes during harmonies were outrageously awesome, though. He does that crazy high note at the end of the Bohemian Rhapsody middle section, and those high notes he hit in In the Lap of the Gods are bananas.