an5539 sub?

[Hexhclass]

hi
can a an5515 be a sub for an5539?
or will la7840 be better?

http://www.alldatasheet.com/datasheet-pdf/pdf/86483/NAIS/AN5539.html

http://www.alldatasheet.com/datasheet-pdf/pdf/77323/PANASONIC/AN5515.html


http://www.alldatasheet.com/datasheet-pdf/pdf/40355/SANYO/LA7840.html




thanks