Leona Lewis - Which song is better - A Moment Like This or Bleeding Love or Footprints in the Sand or Forgive Me?

Leona Lewis, an English pop, R&B and neo soul singer. Lewis has released one studio album, two singles and five music videos.

Lewis debuted in 2006 as winner of the third series of British reality show The X Factor. Her debut album Spirit was released in 2007, and is the fastest selling debut album of all time in both the United Kingdom and Republic of Ireland. It has so far produced two number-one singles, "Bleeding Love", which was the biggest selling single of 2007 in the UK and "A Moment Like This", which is the fastest selling single in the UK by a female artist, beating "...Baby One More Time" by Britney Spears.
(from Wikipedia)
http://en.wikipedia.org/wiki/Leona_Lewis_discography