The best replacement for 55-300 is 70-300.

The best alternatives to 55-300 are rated as following:
★★★★★  70-300
★★★★★  55-200
★★★  70-300mm
★★  70-200
★★  18-300
★★  70-300 vr
★★  70-300 nikon
★  tamron 18-270
★  18-200
★  18-105
★  70-300mm nikon
★  18-55
★  50-200
★  sigma 18-250
★  50-200 pentax
  55-200 nikkor
  canon 55-250
  28-300
  nikon 70-300
  tamron 70-300
  70-300 mm
  tamron 70-200
  nikkor 70-300

Your alternative for 55-300 is not listed? Suggest!
Speaking about 55-300, one probably shouldn't forget about teleconverter.

Other search terms related to 55-300 and their ratings are:
★★★★★ teleconverter
★★★★★ d5100
You have in mind a companion for 55-300 and it is not yet here? Propose!



Google Trends

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55-300
70-300
55-200