The best replacement for vibrant is g2.

The best alternatives to vibrant are rated as following:
★★★★★  g2
★★★★★  captivate
★★★★  mytouch 4g
★★★  nexus s
★★  htc hd2
★★  magnaflow
★★  my touch 4g
★  mytouch
★  fascinate
★  hd2
★  hd7
★  galaxy s 4g
★  bansal
★  defy
★  nexus one
★  galaxy s
  samsung galaxy
  motorola defy
  samsung captivate
  mytouch slide
  my touch slide
  vibrant 4g

Your alternative for vibrant is not listed? Suggest!
Speaking about vibrant, one probably shouldn't forget about kies.

Other search terms related to vibrant and their ratings are:

★★★★★ kies
★★ kies mini
You have in mind a companion for vibrant and it is not yet here? Propose!

Google Trends

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