The best replacement for jirachi is mew.

The best alternatives to jirachi are rated as following:
★★★★★  mew
★★★★★  deoxys
★★★  celebi
★★  togekiss
★★  victini
★★  darkrai
★  metagross
★  manaphy
  shaymin

Your alternative for jirachi is not listed? Suggest!
Speaking about jirachi, one probably shouldn't forget about iron head.

Other search terms related to jirachi and their ratings are:
★★★★★ iron head
★ bonus disc
You have in mind a companion for jirachi and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of jirachi in all years. Click on graph for more.
jirachi
mew
deoxys